Well.. I agree with you that getting rich by gambling is impossible in the real world, that's just a film story. There's a big chance of getting rich when you win the lottery. It's very likely that it can happen, there's even been a lot of news about it, and again, how to do it? use the money, whether to create a business so that the money continues to circulate, so that it is not used up for things such as gambling or the Lottery, however, the money obtained from the Lottery draw can at least be used as well as possible.
Even though it is a rare case, indeed gambling have made some persons rich but then what is needed to sustain the wealth is to diversify as you have noted. Any gambler who is lucky enough to win millions and then continue gambling will certainly go broke because in between lines, he will increase his stake with the hope of winning huge again, and he will chase lose because he believes that he has money.
With such approach he will lose everything within a short period of time. This accounts for the reason most lottery winners go broke after winning the lottery. So, I disagree with you that gambling doesn't make someone rich. It does make rich but wisdom and financial prudence is needed to sustain the riches.
greed, which causes everything to be inconsistent with the desire to become rich, it is possible that what you say is true and there are those who might become rich from gambling, although the chance is very small if you look at the stories that have happened, Because usually, after winning, he will carry out his desire to be able to get even more and that is where the mistake that makes him go down because of the greed he makes.
It's very difficult, as you said, if people have become rich from gambling and the winnings usually can't stop them from doing it again. That's where they made a mistake.
Greed is a part of human nature which sadly i admit i had too when gambling. Lots of time when i'm winning but failed to stop as i have in mind that my luck would continue but in the end of the day, lost my profit and also my capital. That's is why whenever i go out to gambling, i have this game plan, if i win this certain amount, that's it i would go home and go back tomorrow or whenever possible, works fine with me until now.