I don’t even think you can actually be wealthy through gambling
Maybe, yes you would be able to win a few dollars but only after you bet on a few other dollars as well. So you might even become poor first before you end up becoming wealthy in gambling.
But for some, gambling is easy money so that’s why they think that they can be wealthy without any costs,
I can agree with you mate, gambling is not a wealthy pursuit for a person who is very dependent on their skills and knowledge. I have seen many people who are very skilled and knowledgeable, but they are still just managing their funds and saving themselves from losses. The real thing that matters in gambling is luck. It's only my view, and it doesn't require any knowledge or skill, they can become wealthy through gambling, but they are also rare in number. This is the point where casinos face losses when a lucky person comes to the casino; otherwise, casinos get their profits on every bet.