Ok, so 97% of betting/poker people lose longterm, which makes it 3% winning players. From these 3% maybe 0,01% become rich with it (what is rich in the end ?).
Poker dudes are often more open (you could say bragging) about their wealth and what they made - and it's easier to publicly track. Betting people are more cagey. To name a few, that imo got rich with betting and come to my mind: Paulo Rebelo, Caan Berry and Sammy, who quit betting and is doing stock trading now or tried to do it.
As I said, gambling for a living is a normal job with a, most of the time, normal income. You don't ask a plumber, if he got rich with his profession, do you ? There are surely plumbers, that got rich (building a big company), but most plumbers do not.