maybe there is 10 % of rich gambler are doing like that because even if he is rich that don't make him know how to manage his money and gamble carefully he can make bet with high amount .
not easy to get rich in gambling, may be you are right there is 10% of rich in gambling and I think that is a professional gambler.
how about a lucky gambler? i dont know exactly, but people with high luck in gambling there must be