I'm also actually confused by what you mean above, a little don't understand what you're asking, but as far as I know, all gamblers play at risk, it doesn't differentiate between rich or poor gamblers, they take risks when gambling, unless they avoid gambling, it means they don't play at risk. Any kind of gambling always has risks, so what do you mean by rich gamblers or poor gamblers who have to take big risks, what do you mean by winning big, who takes the most risks?
In my view, rich gamblers very rarely think about the risks of their gambling, so it's not surprising that you see many rich gamblers who don't run out of money, let alone make themselves poor just because of gambling, on average they use the money they have or don't use to gamble and have fun. So, if they win big, they see it as just a reward and bonus and if they lose, they won't use any other money, which will make them poor, let alone bankrupt, because they must be good at managing money properly. In contrast, for poor gamblers, it will be a big win for them because maybe Indeed, to win big, poor gamblers always take big risks.
In my view, rich gamblers very rarely think about the risks of their gambling, so it's not surprising that you see many rich gamblers who don't run out of money, let alone make themselves poor just because of gambling, on average they use the money they have or don't use to gamble and have fun. So, if they win big, they see it as just a reward and bonus and if they lose, they won't use any other money, which will make them poor, let alone bankrupt, because they must be good at managing money properly. In contrast, for poor gamblers, it will be a big win for them because maybe Indeed, to win big, poor gamblers always take big risks.