That's correct. It is not about the money but how patient we are in betting. The problem with some gamblers is they are too aggressive with their bets especially when they are chasing their losses. So, even a rich gambler could get rekt anytime if he will not think about his bets while his mind is clouded by revenge.
The emotional swings could put us in a position where we make wrong decisions and rich people could also be on the same spot as the poor. I mean, look at Drake, he keeps on betting high amounts and I think the only good part about what he is doing is, he can earn those losses again because of his popularity and talent. Heck, he might be the one being paid for advertising gambling sites instead of losing.
Most of the time both poor and rich gamblers are being move by emotions, even how much the amount they allocate for their gambling without a good control, they can be careless and lose more. Though for some rich gamblers, they have that good limitation inside them as they value their money and not to allow to over exceed from what they can afford to lose, opposite with poor gamblers who are aiming for luck to double what left in their pockets, not all though but most have this kind of thinking.