Probably out of hundred thousand of gamblers, two digits of it are those people that became lucky. This is just a personal thought and my opinion about the stats and no actual basis.
We don't need actual number of data but we know already that majority are losers in gambling that's why casinos stay profitable and they are a growing industry while the rate is really good. There are exceptional people who make money out from gambling consistently and that's the reason why people are still eager to try their luck or their skills just to prove to themselves if they are exceptional or not.
I admire those people that make themselves perfect with gambling. I'm also a gambler but they really are exceptional kind of gamblers and another type are those who are lucky to win the lottery. By googling it, they will actually show those winners in the past of millions of dollars but there were also stories that many of them as well, didn't protect and used their prizes correctly.
Well I mostly see exceptional talents on poker or in card games since their skills makes them successful in their craft but in other forms I doubt their are successful bettors since provably majority of their bets are in lose compare to their winnings. But I'm looking up on sportsbetting and want to see if their are people who earn a success stories for betting on their favorite teams.