Search for Billy Walters, he is rich because of gambling and not only a regular rich person because he has a mansion and was able to buy a private jet which real rich only can afford like Floyd Money Mayweather, you can see his story in Youtube by searching his name there.
Like what I've said I heard some stories that some people really became rich becuase of gambling. But in my experience I didn't see people in my surrounding become rich because of gambling, maybe they earn some money but not become rich at all.