...Since it's like that, I think it's just the poor people that are gambling the most in the world, if am not correct, I stand to be corrected.
I'm sure you're mistaken. Among rich people, we also see that they are subject to all the same vices as poor people. Look at Las Vegas, do you see poor people there? It was for the rich that these fashionable casinos were built, while poor people are content with a slot machine in a local store.