Maybe the owner of gambling sites. so yes there is some people who got rich with gambling. But not all time you'll lucky it's very risky to player to get rich . I have many friends winning in gambling but not all day is lucky day many times he got lost.
Those gambling site owners are the one who are applicable to the title of the thread and I don't think that someone is becoming rich in gambling if he is just gambling simply with dice sites, sports betting without winning some big amount, they can be just rich if its possible and they are going to be the luckiest man on Earth and wins the pot.