In the 48 states that permit at least some form of commercial gambling, lively debate continues over the industry’s relentless efforts to expand. On Tuesday, New Yorkers will vote on a proposed constitutional amendment that would permit up to seven new full-scale gambling casinos in the state. (The state’s five existing casinos are confined to Indian reservations.)

Gov. Andrew M. Cuomo argues that the amendment would create jobs, increase school aid and lower property taxes. And, yes, it would do all those things. But it’s still a bad idea. Other strategies would accomplish the same goals more effectively, without the disastrous spillovers that invariably accompany expanded gambling.

The ostensible attraction of the amendment is its promise to relieve budget woes without new taxes. In proponents’ eyes, state income from gambling is a form of voluntary tax payment. But modern casino revenue comes mostly from slot machines, and the relationship between them and some of their patrons is voluntary in only the most superficial sense. “Addiction by Design” (Princeton University Press, 2012), Natasha Dow Schüll’s gripping account of slot machine gambling in Las Vegas, looks into the technical wizardry underlying modern slots and their effects on players. According to slot designers and casino managers surveyed in the book, the mission of these machines is simple: to separate patrons from their money in the most ruthlessly efficient — yet psychologically agreeable — ways possible.

The machines create an experience so compelling that some people stop playing only when they’ve exhausted every available resource. Ms. Schüll, a cultural anthropologist on the M.I.T. faculty, interviews a slots player who sees the machines as so immersive that winning becomes a distraction, something that matters only because it lets her play a little longer. “It’s like being in the eye of a storm,” the woman says, later adding, “You aren’t really there — you’re with the machine and that’s all you’re with.”

Psychologists describe this state as flow, a feeling of being so absorbed in what you’re doing that you become completely unaware of the passage of time. Artists, writers and others who achieve flow in their work call it one of the most pleasurable psychological states, one that greatly enhances productivity. But in hindsight, at least, flow as experienced by some slots players is a state that leads to ruin.

If casino gambling were expanded, most New Yorkers wouldn’t be directly affected. Even in places that already have it, only a small proportion of people become problem gamblers. But much the same could be said of crack cocaine. If it were legal, most people wouldn’t even use it, much less become addicted to it. But in both cases, the number who would become addicted, though small in proportional terms, would be disturbing. If governments shouldn’t raise revenue by sharing revenue with sellers of crack cocaine, why should they enter similar pacts with casino operators?

A 2004 study of legalized casino gambling in Ontario estimated that about one-third of casino revenue came from patrons with significant gambling problems. Libertarians contend that if gambling addicts freely choose to waste their own money, that is none of society’s business. But addiction also harms the innocent, making marriages more fragile and bankruptcies more likely. Properly accounting for these spillovers exposes casino expansion as not only an inhumane policy, but one that could actually reduce state revenue.

Historically, societies have tried to shield their most vulnerable members from dangerous temptations, including many forms of gambling and addictive drugs. Discreet private gambling and soft drug use are seldom targets of these prohibitions. But active revenue sharing with casino operators crosses a bright line. It lends the state’s imprimatur to activities that ruin lives. Governments have been properly reluctant to take this step.

As parents tell their children, the best way to get ahead is to get more education, work hard and save for the future. For many years, however, New York has encouraged its citizens to rely instead on luck, to dream about what they’d do if they won the state lottery. “I’d buy the company and fire my boss,” intoned one artfully produced, state-funded television spot.

New York does need more revenue. And though no one relishes higher taxes in the abstract, there are many things we should be taxing but aren’t. When we buy heavier vehicles, for example, we put others at more risk. If vehicles were taxed by weight, we’d have an incentive to consider that risk when buying. Companies may emit pollution not because they want to ignore the environment, but because cleaner processes are expensive. If we taxed pollution, businesses would emit less of it. Instead of promoting gambling, the governor should explain that the state should be taxing activities that cause more harm than good, even if we didn’t need the revenue.

Politicians naturally fear taking unpopular positions. But voters are sometimes willing to cut them some slack. Mr. Cuomo might reflect on the repeated vetoes of death penalty laws by his father, Mario M. Cuomo, when he was governor in the 1980s and ’90s. The death penalty was extremely popular at the time, yet voters sensed that the vetoes sprang from sincere conviction, and they were quick to forgive him.

Voters might be similarly tolerant if the current Governor Cuomo advocated more principled methods of generating new state revenue. He’ll be more motivated to do so if voters reject an amendment that’s sure to increase addiction by design.

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BOSTON — Suffolk Downs, a famed but fading thoroughbred racetrack in the neighborhood of East Boston, had dreams of a major revitalization, and when the state approved casinos in 2011, it partnered with the Caesars Entertainment Corporation to apply for the sole casino license that would be awarded in the greater Boston. They planned a $1 billion destination resort casino that would be one of the biggest in the Western Hemisphere, a curved, glassy mega-palace that might look more at home in Miami Beach than in this gritty neighborhood hard by Logan International Airport.

Suffolk Downs needed voter approval before it could advance to the next stage for the license and invested more than $2 million in a campaign for a yes vote on a referendum on Tuesday’s ballot.

But in mid-October, the Massachusetts Gaming Commission, reputed to be one of the toughest in the country, pulled the plug on Caesars, saying it was unsuitable for doing business in the state. Suffolk Downs asked Caesars to withdraw, and it did.

Now, Suffolk Downs is suddenly scrambling to find a new partner. And the election is going ahead because the ballots have already been printed — with Caesars’ name on them.

Suffolk Downs says Caesars’ exit does not change anything as far as voters go. But opponents say that it changes everything and that it is absurd for voters to be passing judgment on something that does not exist.

“At a certain point, you can’t cancel a vote,” said Pamela Wilmot, the executive director of Common Cause Massachusetts, a watchdog group, which has not taken a position on the casino. “But this throws the whole thing into doubt, with voters not really knowing what they’re voting for.”

If the referendum passes, she said, opponents will probably challenge it in court. “Voter intent will be difficult to ascertain, given the situation,” she said.

As confusing as this might be for voters, Suffolk needs their approval before it can compete against two potent rivals that are also seeking the license for a casino to be built in the untapped, lucrative Eastern Massachusetts market. At stake is billions of dollars in anticipated revenue, some of which will be shared with the host community and the state.

One rival is Steve Wynn, the Las Vegas casino mogul and chief executive of Wynn Resorts Ltd., who has proposed a $1.2 billion resort casino on the Mystic River waterfront, a few miles west in the town of Everett. Residents there have approved his project with 86.5 percent of the vote.

Another competitor is Foxwoods, which is planning a $1 billion casino in the suburban town of Milford, about 40 miles southwest of Boston. Milford will vote on the Foxwoods plan on Nov. 19.

Once they have local approval, the casinos must submit their final applications to the state by Dec. 31. The gambling commission is to award the license by spring.

Suffolk Downs was believed to have the edge because of its strong political backing, most notably from Mayor Thomas M. Menino of Boston. The track, where the Beatles played in 1966, is also a sentimental favorite since it has been here almost 80 years. Pro-casino organizers are trading on that nostalgic connection: their green and yellow signs say “Vote ‘yes’ for Suffolk Downs.” In tiny letters is the Caesars logo, but the word “casino” does not appear.

But the gambling commission threw cold water on Caesars’ participation. In a lengthy report, it cited Caesars’ $24 billion debt, alleged ties of an associate to organized crime in Russia and a scandal involving a high-roller named Terrance Watanabe, who racked up millions of dollars in unpaid debt at Caesars casinos and in turn claimed that the company encouraged him to gamble while he was intoxicated.

Suffolk Downs officials said they were blindsided by the report. Caesars said it was equally surprised. On its way out, the company, which operates more than 50 other casinos across the world, said the Massachusetts standards for suitability were “arbitrary, unreasonable and inconsistent with those that exist in every other gaming jurisdiction.”

The commission did deem Suffolk Downs suitable for a casino. As track officials seek a new partner, they have sought to minimize any sense of disruption. Chip Tuttle, the chief operating officer of Suffolk Downs, said the ballot referendum was merely a land use question for voters. He said the track would acquire a new partner quickly and hold it to the same standards agreed to by Caesars.

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New Jersey began allowing Internet gambling on Tuesday in a much-watched bet that there are untapped sources of revenue on bedside iPads and cubicle desktops, and even among people checking their phones while they wait in line for coffee.Gambling analysts say it is the most significant development since casinos opened in Atlantic City over three decades ago, ultimately setting off what became a furious competition among states for a share of the take.

Eight other states have legislation pending that would allow Internet gambling. Delaware and Nevada began offering some online gambling this year. But New Jersey is considered the first true test case because it allows a full range of casino games — not just poker — and its much larger population offers the scale to see whether online gambling can meet the bold predictions for revenue and tap into a younger, more web-dependent demographic without stealing customers from struggling casinos.

Gov. Chris Christie, a Republican, who signed the legislation allowing Internet gambling this year, is counting on that gambling to generate $1 billion for the state’s casinos in its first year, bringing in $150 million in tax revenue to help balance the state budget.

Ratings agencies and gambling industry analysts said that estimate was hugely inflated; one forecaster, H2 Gambling Capital, predicted that online gambling will produce about $300 million for New Jersey casinos — or about $45 million in tax revenue.

But H2 Gambling Capital estimated that the market in the United States could be worth about $9 billion in the next five years, particularly if large states such as California that are now considering online gambling begin to allow it.

Analysts are watching to see not just whether New Jersey can make money, but also whether new technology can guarantee that bets are placed only within state lines and by people older than 21, as the legislation requires. They are also watching whether, as some fear, the online expansion will put gambling addiction a mere click away.

The official debut on Tuesday was only the beginning of what promises to be a political fight. Legislators are already pushing to allow international companies to operate in New Jersey; the current law allows Internet gambling only through a limited number of casinos.

On the other side, Sheldon Adelson, one of the largest casino operators in the world and a major Republican donor, has pledged to fight state and federal laws that would allow more Internet gambling — a stance that is bucking most of the industry.

“The Internet is the next frontier not just for gaming but for every industry,” said Geoff Freeman, the president of the American Gaming Association. “You can look at industries that have seized the potential of the Internet to leverage and grow their business. Then there are those companies like Blockbuster and Hollywood Video who tried to force people to consume their products how they wanted us to consume them, and went out of business.

“As an industry, the question is how do we get out ahead of this.”

Executives at online gambling companies argue that it exists illegally already and may as well be tapped for profit and tax revenues, and regulated to protect players.

Worldwide, online gambling is now a $33 billion market, and $3 billion of that comes from illegal bets placed in the United States, according to the gaming association.

“It’s a new era of using the technology to meet what regulators are concerned about, to protect our children and our data,” said Tobin Prior, chief executive of Ultimate Gaming, which is operating games through Trump Taj Mahal in Atlantic City.

Gambling online was largely accepted in the United States from the late 1990s until 2006, when Congress passed a law that made it illegal for gambling companies to accept bets online for “unlawful” transactions. Many companies left the market, leaving less well-regulated operators that in several cases turned out to be laundering money.

In early 2011, the Justice Department indicted the heads of three companies operating online poker in the United States. But later that year, the department issued a ruling saying that only sports bets were unlawful. States, already in a fierce competition for casino customers, moved quickly to take advantage of the new market.

The legislation signed by Mr. Christie was a lifeline to Atlantic City casinos, which have been losing customers to new casinos in New York and Pennsylvania. Under the law, online gambling companies have to operate through the casinos.

Seven casinos were approved for a “soft launch” that began last week, with a trial offered to invited guests. State gaming officials said they were surprised at how many people accepted those offers — about 10,000. Six casinos — all but the Golden Nugget — were approved for wider play starting on Tuesday..

The state and the casinos sent testers outside the state to test technology that is supposed to guarantee that bets come only from within New Jersey. None of those testers succeeded in breaking through, though casinos said some others did. Other gamblers in New Jersey tried to get onto the sites but could not. And some banks and credit card companies blocked customers from getting access.

“It’s taking a bit of time for these guys who exited in 2006 to be reassured that the players who are here now are bona fide,” said Brian Mattingley, chief executive of 888.com, which operates in all three states that offer online gambling.

David Rebuck, director of the State Division of Gaming Enforcement, said most of the bets during the trial period had been placed on computers, not mobile devices, and had been concentrated where the state expected, in cities in the northern part of the state, such as Hoboken, with its sizable population of people in their 20s and 30s. “We were inundated with people trying to get in,” he said.

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MADRID — Sheldon G. Adelson, the billionaire casino magnate, on Friday abandoned his plans to build a $30 billion gambling and leisure resort on the outskirts of Madrid after failing to win financial concessions and other favors from the Spanish government.

The decision by Mr. Adelson’s company, Las Vegas Sands, to drop its EuroVegas resort project is an economic blow not just for Madrid but for Spain as a whole. The country has been pining for foreign investment to help revive its economy and cut its 26 percent unemployment rate.

Although Spain recently emerged from a two-year recession, it remains mired in stagnation, deeply troubled by low consumer spending and a domestic credit squeeze that lingers from the country’s housing bust and the subsequent banking bailout in 2012.

But while Mr. Adelson was openly welcomed by the government, several Spanish civic and religious groups, opposed to gambling, sought to block the EuroVegas project. Some critics warned the authorities against bending Spanish legislation to suit Mr. Adelson, by granting him special tax benefits as well as accepting his request to exempt EuroVegas from a nationwide ban on smoking in public spaces.

Political opponents of the governing Popular Party also argued against granting Sands any tax concessions.

With an estimated net worth of $28.5 billion, the 80-year-old Mr. Adelson is one of the richest men in the world. The bulk of his wealth comes from the extravagant casino resorts he has developed in Las Vegas, the Venetian and the Palazzo; several built or redeveloped more recently in Macao, a former Portuguese colony that is now part of China; and one in Singapore.

Mr. Adelson, long a supporter of conservative causes, has been an active player in American politics. In the 2012 presidential election, he donated more than $60 million to his preferred candidates, first Newt Gingrich and then Mitt Romney, a sum that made him the single largest financial contributor in a presidential race.

In a statement on Friday, Sands said that it had dropped the Madrid project after an extensive review and that it would instead pursue alternative investment opportunities in Asia. It did not detail the review’s conclusions.

“Developing integrated resorts in Europe has been a vision of mine for years,” Mr. Adelson said in the statement, “but there is a time and place for everything, and right now our focus is on encouraging Asian countries, like Japan and Korea, to dramatically enhance their tourism offering through the development of integrated resorts there.”

Mr. Adelson’s investments, dependent as they are on securing regulatory approval from states and foreign governments, have frequently courted controversy. Earlier this year, Mr. Adelson’s company, Las Vegas Sands, disclosed in a regulatory filing that it might have breached a federal law prohibiting bribery of foreign officials.

For some time now, Mr. Adelson’s business activities and investment plans in China have been closely scrutinized, including payments Sands made via a separate Chinese company. In 2010, his company was sued by a former employee who claimed he had been forced to impose improper pressure on Chinese government officials.

Macau, the gambling mecca in China, has become the main driver of Mr. Adelson’s wealth. Analysts say that overall gambling revenue in Macau was $38 billion last year — close to 90 percent of its economy — compared to about $6 billion in Las Vegas.

In Europe, casino gambling has been relatively limited; the Monte Carlo casinos in Monaco, the largest on the Continent, generate about $230 million in gambling revenue. Mr. Adelson, who announced his plans to bring a megaresort to the Continent in 2009, would have overwhelmed that.

While there were rumors from time to time that Mr. Adelson might be tempted if the Greek government were prepared to essentially let him take over an island in the Aegean, it appears that from the start he seriously considered only Spain for the immense project.

In September 2012, after a lengthy competition between Spain’s two largest cities, Sands chose Madrid for EuroVegas rather than Barcelona. At the time, Mr. Adelson’s choice was seen not only as a fillip for Madrid’s regional economy but also as a sign that foreign investors were ready to return to Spain. Underlining the importance of such a project for the country, Prime Minister Mariano Rajoy met three times with Mr. Adelson to discuss his EuroVegas plans.

The project had already run into delays, as Sands originally planned to start construction of EuroVegas in mid-2013 and complete the complex within 10 years.

Mr. Adelson’s U-turn came after Mr. Rajoy’s government reviewed his request for the smoking exemption, as well as his financial demands. According to Spanish officials, those included an insistence that the government guarantee financial compensation for any changes in the country’s gambling laws that could hurt EuroVegas and grant EuroVegas a special rate on the gambling tax. Spain’s review also included discussions with the European Commission to determine whether making such concessions would violate European antitrust rules.

Sands proposed EuroVegas as a giant resort that would operate 12 hotels with a total of 36,000 rooms, six casinos with 18,000 slot machines, and three golf courses. But Sands remained evasive about how it would finance the project, saying last year that its own contribution would be 25 to 35 percent of the equity of EuroVegas and that it would look for “financing options from the capital markets” to cover the rest of the cost.

Politicians in opposition parties warned Mr. Rajoy and Madrid’s regional government, which is also in the hands of the conservative Popular Party, against providing any special fiscal or regulatory treatment for EuroVegas.

Tomás Gómez, the Socialist party’s regional leader in Madrid, said last year that even though EuroVegas would help his city, the Socialists would work to ensure that the law was the same for everybody.

Spain under the rule of Mr. Rajoy has taken aggressive steps in hard-hit Southern Europe to ease the path for foreign investors, especially in the automotive industry, where exports have played an important part in the country’s tepid economic recovery.

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BOSTON — When Massachusetts finally gave in after decades of resistance and decided two years ago to legalize casino gambling, it seemed a relatively easy way to fill the state’s recession-battered coffers.

Some of the nation’s biggest casino operators, including Caesars Entertainment, MGM Resorts International and Wynn Resorts, rushed in to get a piece of this potentially lucrative market. Having already spent millions of dollars lobbying lawmakers to allow casinos, they then spent millions more selling themselves to voters, mainly by promising streams of revenue and thousands of jobs.

But a funny thing happened to the moguls on the way to staking their claims. Voters in several towns rejected them. While they did not object to casinos per se, they told pollsters, they did not want them in their own backyards.

Even Gov. Deval Patrick, who pushed through the casino legislation, acknowledged that he would vote against a casino if one were proposed for the town in the Berkshires, in western Massachusetts, where he owns a second home.As if voter rejection were not discouraging enough, the casinos also faced an unusually tough gatekeeper in the Massachusetts Gaming Commission, which was charged with investigating them and will be selecting one casino for at least two of three regions in the state this spring. The winnowing produced daily twists and turns that transformed the process into a running soap opera. Investigators raised questions, for example, about Caesars’ suitability for a license. One involved a rather tenuous tie to an alleged Russian mobster. Still, Caesars withdrew, despite having spent $100 million here.

There were revelations about a possible conflict of interest involving the gambling commission chairman, who was subsequently sued by Caesars, which is looking to redeem itself. And the commission made some eyebrow-raising decisions, like allowing a casino proposal to move forward even though it had been defeated by one of the two towns it would straddle (the commission said the law was ambiguous).

Adding to the drama is Steve Wynn, of the Wynn Resorts gambling empire. He is already trying to change the long-set state law that says gamblers must pay a tax on any winnings over $600, an amount he says is so low it will discourage customers. At one commission hearing on his company’s practices, he fell asleep at the witness table.

Lawsuits are now flying, and a nascent statewide movement to repeal the 2011 casino legislation has picked up steam.

“Watching the way this is playing out, for those of us who opposed the casino legislation in the first place, just reinforces our concerns,” said Michael S. Dukakis, the former governor.

Gambling is not anathema to New England, despite the region’s Puritan roots. New Hampshire started the nation’s first state lottery in 1963. New England’s first casino, Foxwoods, opened in Connecticut in 1992; today it is one of the largest in the world.

It was the success of Foxwoods that helped inspire Massachusetts to consider casinos in the first place; so many residents were going to Connecticut to gamble that officials here decided to give them a reason to part with their money at home.

The casinos scouted locations and made lavish offers to their potential host communities to win support. Towns that were struggling financially tended to accept them. Wealthier towns spurned them, fearing that the quality of life would deteriorate because of increases in traffic and crime, the ripple effects of gambling addiction and the cannibalization of local businesses, especially mom-and-pop enterprises.

“The gambling industry is constantly looking for new markets, but it’s finding it very difficult to get into the markets they want to be in,” said Richard McGowan, who teaches business at Boston College and is an authority on gambling. “They want to be where the money is.”Scott Harshbarger, a former state attorney general and former president of Common Cause in Washington, is helping to lead the casino repeal movement. Anticasino activists have gathered enough signatures to get the measure on the November ballot, but a legal challenge must first be resolved.

“This is a mess, and it’s going to get worse, not better,” Mr. Harshbarger said of the process. He said the repeal movement was driven in part by a growing sense that statewide voters should have as much say as lawmakers when it comes to plopping down $1 billion casinos in New England’s town squares.

“If we’re going to make this kind of radical change in our culture and public policy, maybe the people ought to vote on this and not just the legislature, which is influenced by special interests,” he said.

The process has defenders. One is Stephen Crosby, the chairman of the gambling commission. He said in a brief interview that the law was working as intended, especially because it gave local control to towns so that casinos would end up only in places that wanted them.

“This is a controversial industry with a very sophisticated, nuanced law to try to make it as good as possible,” he said. “That gives lots of room for people to be knocked out of the box, and that’s happening.”

Mr. Crosby caused some controversy himself for revealing late in the game that he had a potential conflict of interest because of previous ties to a landowner who stood to gain millions of dollars if his site in Everett, near Boston, was selected for a casino. Although the state ethics commission cleared him, Mr. Crosby recused himself from voting on the land transaction; still, skeptics want him to recuse himself from all decisions involving a license in the Boston region. He said that he could be objective and that fair and reasonable people would see that he is.

By its Dec. 31 deadline, the commission received applications from just four casinos, about a third of the number originally anticipated. In western Massachusetts, only one operator, MGM Resorts, which has proposed an $800 million casino in Springfield, is up for a license; voters in two other towns said no.

In the southeast region, a license had been set aside for a Native American tribe, presumably the Mashpee Wampanoag, which has already won approval from voters in Taunton. But the tribe is awaiting a federal ruling on its land; meanwhile, KG Urban Enterprises has applied for the southeast license for a casino in New Bedford. No decision is expected for some time. (Separately, Governor Patrick has gone to court to stop another tribe from building a casino on Martha’s Vineyard.)

In the greater Boston region, where billions of dollars are at stake, only one application was complete. Wynn Resorts, which was spurned by the relatively affluent town of Foxborough, won approval from the town of Everett to build a $1.3 billion casino on chemically contaminated land on the waterfront.

A second application for the Boston region was filed by Mohegan Sun, the giant Connecticut casino operator, for a $1.3 billion resort casino at the fraying Suffolk Downs thoroughbred racetrack, which is partly in Revere. But the Mohegan/Suffolk proposal still needs to be approved by the town, which is scheduled to vote on Feb. 25 in what will be an intense campaign that is likely to motivate pro- and anti-casino forces from beyond its borders.

The proposal emerged at the 11th hour after a convoluted series of events, including Caesars’ abrupt withdrawal and a rejection by voters in East Boston, the other town that the track straddles. Casino opponents say the commission bent its rules to allow the proposal to move forward, in part to ensure some competition against Mr. Wynn in nearby Everett.

To sweeten the pot for Revere voters, Mohegan signed what may be the most lavish host community pact in the state. It includes an opening payment of up to $33 million plus $45 million in infrastructure improvements and, perhaps most enticing, preference for Revere residents for the project’s 2,500 construction jobs and 4,000 permanent jobs. City officials in Revere are fully on board, calling the proposal a once-in-a-lifetime opportunity for a complete transformation.

Once the licenses are awarded this spring, each winning casino must pay the state $85 million in a nonrefundable license fee. Construction could begin by summer.

The potential for chaos exists, though, if statewide voters then decide in November to repeal the casino law. But the developers are not thinking about that now.

“I’m worried about a meteor hitting, too,” said Chip Tuttle, the chief operating officer of Suffolk Downs. “But there’s not much I can do about it.”

Correction: January 12, 2014
A credit for an illustration last Sunday with an article about problems in setting up casinos in Massachusetts, using information from a publicist, misstated part of the name of the company that supplied the rendering of a $1.3 billion casino proposed for Revere, Mass. It is KPF and Mohegan Sun Massachusetts (not KPM).

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Singapore’s tourism receipts doubled to $18 billion within two years of opening the Marina Bay Sands and Sentosa casino resorts in 2010, and visitor arrivals jumped nearly 50 percent. Lured by Singapore’s success, the Taiwan Legislature could soon allow the opening of casinos. And Japan, with an official goal of tripling the number of foreign tourists in 20 years, is considering building casinos. Analysts believe that gambling in Japan could generate gross revenue of $15 billion annually.

But these countries should also pay attention to another aspect of Singapore’s experience apart from revenue. Singapore has gone to considerable lengths to shield some of its most vulnerable people from the negative social consequences of gambling. Promoters naturally emphasize the positives of gambling, mainly how casinos attract foreigners and their money. But they say little about the negatives: addiction, broken families and criminal activities like loan-sharking, all of which fall heavily on local communities and on low-income groups. To dampen these effects, Singapore levies an $80 casino entrance fee on local residents, while foreigners enter free. After a 2011 survey showed an increasing proportion of low-income gamblers playing with ever-larger sums, the state decided to prohibit entry by the unemployed, people on welfare and people who have filed for bankruptcy protection.

As South Korea’s experience shows, local residents generate lots of money. Of the country’s 17 licensed casinos, only one, Kangwon Land Resort, in a remote mountain area more than 100 miles from Seoul, is open to locals. But its revenue, about $1 billion annually, exceeds that of the other 16 foreigners-only casinos combined.

Casino investments under consideration in Taiwan and Japan could total several billion dollars. The promoters, of course, advertise gambling as a revenue-producing leisure activity. But if these investments go forward, both countries need to consider the downside and, at the very least, seek ways to curb addictive and self-destructive behavior.

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