The Casino Doesn’t Have to Cheat. It Just Has to Wait.

Lao Chen is a small business owner I know. He sells building materials, saved for more than a decade, and had 500,000 yuan in spare cash. In 2019 he went to Macau for the first time. When he came back I asked him how it felt. He said, “Not bad. I won 80,000.”

The second trip, he won 120,000. The third trip, he lost 50,000. The fourth trip, he won 200,000. The fifth trip, he lost 300,000. The sixth trip, he didn’t tell me.

Later his wife told me that on the sixth trip he took all 500,000 with him and lost every yuan on the eleventh day. The last hand was baccarat. He bet on Player and lost seven hands in a row. He said that during those seven hands, every single time he felt, “The next one has to win.” On the eighth hand he didn’t bet, because he had no money left.

This is the classic problem in probability theory: gambler’s ruin. Suppose you and another person flip a coin. Heads you win one yuan, tails you lose one yuan. Fair game, right? But you only have 100 yuan, and your opponent has 10,000. Whoever runs out first is out. Even if this game has no house edge at all, as long as you keep playing, your probability of eventually losing everything keeps rising. Random fluctuations will always produce extreme sequences. You may win many times in a row, but as long as the number of plays is large enough, you will also run into a losing streak. Your capital is limited. Your opponent can afford to wait.

Lao Chen lost to a structure, not to luck. Limited capital, continuous betting, negative expectation. Put those three together, and ruin is a matter of time. The casino does not need to beat you on every hand. It only needs you to keep playing. As long as you do not leave the table, probability stands on the side with thicker capital and better rules.

Leverage shortens this process even more brutally. Without leverage, you can still survive a stretch of losses. With leverage, one ordinary fluctuation can force you out. You think you are amplifying returns. In fact you are shortening the time until you hit the absorbing barrier of ruin.

That Year, His Fees and Commissions Ate More Than 20 Percent of His Principal

Another friend of mine traded futures. In 2015 he showed me his trading records. His principal was 300,000 yuan. Over the year his trading volume was 12 million yuan. Commissions plus slippage came to more than 60,000. After he ran the numbers he said to me, “I thought I was trading. Actually I was working for the exchange.”

How do you calculate commission cost? Trading volume times fee rate times number of trades. Note that what gets raked is usually not your principal but your trading volume. But if your turnover is very high, trading volume will be far larger than your principal. He traded more than 400 times in a year, almost twice a day on average. Each time it looked like only a few dozen or a few hundred yuan. Multiply that by 400 and 60,000 was gone. And his net profit that year was minus 40,000.

Casinos have a house edge. Exchanges charge fees. Futures markets have spreads, slippage, funding fees, and delivery costs. Stock markets have commissions, stamp duty, and market impact costs. None of these look like much on any single trade, but they are water leaking out of the common pool first. As long as the number of trades is large enough, the leak will outpace most people’s ability to make money.

This is why gambling and short-term high-leverage speculation are negative-sum games. In a zero-sum game, what the winners make equals what the losers lose. In a negative-sum game, all participants first pay an entrance fee together, and only the remainder gets redistributed. You must beat your opponent and the rake. You must guess the direction correctly and cover the cost. Over the long run, most people are not defeated by one big market move. They are slowly ground down by countless commissions, spreads, and slippage.

One thing needs to be made clear: an exchange is not the same as a casino. Markets perform price discovery, financing, hedging, and resource allocation. Long-term holding of productive assets can share in corporate profits and economic growth. But high-leverage, high-turnover, short-cycle speculation really does resemble a negative-sum gambling structure in its cost profile. The more frequently you trade, the closer you get to casino logic. The longer you hold and the closer you get to owning a business, the more likely you are to escape the negative-sum structure.

Yao Jianyun Said That Very Little in Gambling Is Real

Young people today may not know the name Yao Jianyun. In the 1980s and 1990s he was a famous “gambling king” in the Jiangxi area. He won a lot of money at gambling tables with cheating techniques. Later, in one game, someone saw through him. The other side took direct action. He lost both his legs and three fingers. For the rest of his life he gave speeches everywhere, urging people to quit gambling. He said one sentence: “Very little in gambling is real.”

Regulated casinos usually do not openly cheat on every hand. But no regulated casino is a charity devoted to fairness, justice, and openness. What they make public is the rules. What they hide is the house edge. Roulette has a zero. Baccarat takes a commission. Slot machines are designed with a return-to-player rate. The casino does not need to cheat. It only needs to be a few percentage points ahead of you mathematically, and then get you to play enough times. Public does not mean fair. Transparent rules do not mean positive expectation.

Illegal gambling dens are more direct. They change the odds, control the results, set up suckers, and manipulate the back end. The saying “nine out of ten gambles are frauds” is not an exaggeration. Gambling is a profit-seeking activity. In human history, it has never been premised on fairness by default. Casinos need advertising, need an image, need to make you believe “this place is fair.” But their business model is not to let you win. It is to keep you betting.

Securities markets also have manipulation, insider trading, retail investors getting harvested, and false information. But markets also have regulation, disclosure, dividend mechanisms, and corporate earnings to support them. You cannot simply say “the securities market is a casino.” A more accurate statement is this: the market is not a naturally fair paradise, but high-leverage short-term speculation is closer to a casino. Between investing and gambling lies an entire system of expected value, cost structure, and risk control.

Winners Post on Moments. Losers Say Nothing.

There is another, more hidden rake: human nature.

Stories about winning get spread around. People who lose stay silent. When Lao Chen won 80,000 the first time, he treated three tables of friends to dinner. When he lost all 500,000 the sixth time, he did not even tell his own older brother. This is survivorship bias. Win a few times in a row and people develop an illusion of control, believing they have found a pattern. Lose a few times in a row and they fall into the gambler’s fallacy, thinking, “The next one has to win.” After a loss, unwillingness to accept it is loss aversion. The more you have put in, the harder it is to walk away. That is sunk cost. Seeing others make money and rushing in is the recency effect and herd mentality.

Leverage also brings a dangerous kind of excitement. It makes volatility larger and feedback faster, and makes people mistake it for being in control of risk. A friend of mine who traded forex once told me that what he loved most was those few minutes when non-farm payroll data came out. You put on a position, and in two minutes you either double your money or blow up your account. “That feeling is more addictive than making money itself.” He blew up three accounts later. He does not trade anymore. Now he drives for Didi.

Casinos and short-term markets are good at letting you win sometimes. That occasional positive feedback is the most expensive bait. It makes you believe you can win it back next time. It makes you mistake chance for ability and luck for pattern. What really drives people out is often not one big loss. It is the obsession with “one more hand.”

The Victory That Matters Is Leaving the Table

Here is the conclusion. Keep several things separate.

Gambling is consumption, not investment. If you treat it as entertainment, you need an entertainment budget. When it is gone, stop. Never add more. Short-term high-leverage speculation is a negative-expectation structure. High-frequency trading, leveraged contracts, chasing rallies and dumping into declines: these have high costs, low tolerance for error, and extreme demands on human nature. Most people cannot win over the long run. Long-term investing depends on expectation, cost, and risk. Reduce turnover, control leverage, diversify risk, focus on productive assets, and let time and corporate earnings stand on your side. The most important ability is to be able to stop. Casinos are not afraid of you winning. They are afraid you will not come. Markets are not afraid of you being smart. They are afraid you will not trade.

Lao Chen later rebuilt his building materials business. Last year he told me that his only remaining “gamble” is taking 20,000 yuan to Macau once a year to play for three days. When it is gone, he leaves. His wife said that before he goes now, he puts the 20,000 on a separate card. That card has no online banking and cannot transfer money. After three days, whatever is left on the card gets withdrawn, and he treats the whole family to a meal.

Gambling’s cruelest trick is not the money it takes. It is the belief that the next hand can win it back. The victory that matters is leaving the table while you still can.