I do not believe in anything called professional gamblers. I see it has something that can be deceiving because there are rich people that can go broke at anything. Gambling can be one of the reasons if you solely depend on it.
Even on the gambling site terms of service, it is highly advised that people should gamble just for fun.
I wonder why someone will seek a profession in gambling, like how is it going to work? Is there even such things like a professional gambler? What special skills can one use to win bets all the time, is it really possible because when we talk of a professional gambler we are talking about someone who has or knows unique ways to win in gambling which i believe that no one can beat their chest that they can got a winning streak without losing. Sure, rich dudes go broke as a result of gambling, i know someone who got a huge amount of money that he would have invested on important stufs but instead he used it to gamble and lost all, became broke again.