I don’t think so that one can get rich by betting or gambling.
There is possibility that he/ she can get some money through gambling but I don’t think so that he/she can get so much to be a rich.
Other point is that if someone get a big wining in the gambling in one turn in another term he/she will lose the money, so in the end he/she can’t make huge money.
I have heard rich people getting poor through gambling but I haven’t heard someone getting rich through gambling.