Self control will let you to enjoy your winning amount, and if you also have that investors mindsets after winning huge amount of money, instead of bringing it back to casino or any types of gambling best to use it for investment, establish your own business using your winning money or invest that amount to any ideal investment that you have same interest with, from that point of view, chasing your loses might be by far and instead of risking more money you might be able to make some and enjoy.
What you said is correct but not all gamblers is gambling to gain capital for business. They choose to gamble because is the easiest way to gain money short term and to have fun at the same time. They will not resort to gamble if their main purpose is to have capital for business since they can start business right away using their funds from gambling if they really want that.
Most gamblers that win huge profit tends to gamble it all since they dedicate that money for gambling purposes including the profit. Personally, I have different funds for investments and consider all my gambling funds including profit to gambling and other form of entertainment.
In fact it is very difficult for gamblers to use the profits they get from gambling to get more capital. Many people do not think about funding for business it is better to have a separate fund for gambling and good investments. Gambling risk is high here but if you invest elsewhere there will be no problem in investment above all without expecting to join the world of gambling. And if you manage a win consider it luck ultimately players lose as much cash as they win so it's better not to risk your own funds.