Gamblers are the one who manipulates money in the market. By gambling the money circulates from time to time to a lot of people, because some people lose and some people win. That's why gambling is very risky because there's a probability that if you lose, your money will be owned by your opponent or by the casino. It is really hard to take risk because the money is not that easy to get, some people work hard for their money and they will just put it in a gambling. That's the reason why people some people stopped from gambling because they realized that the money they spent goes only to the casino. Instead of trading or holding, other people will benefit to your money if you lose a huge amount of money in gambling. The market will also benefit to your losses because it will surely circulate and maybe contributed to the stock market.