Plenty of poor clever people exist. A lack of variety or experience in large gains would make the gambling larger then life so be more disruptive perhaps. A rich person in theory is gambling a lower percentage of their net worth, a greater amount of wealth is not liquid so cannot be gambled perhaps. The poorer parts of an economy or population tend to have far higher worth in purely cash positions, weekly wages etc. so in that sense more harm is possible. Poor people also suffer most from inflation for example.
I am not an expert in analytics, but it seems to me that the poor do gamble more than the rich, but this is not because they have no brains, but because they are less financially educated, and some of them are not educated at all. Also, when you have very limited money, your entertainment is also very limited, and of all the possible ways to spend the evening after work, you are left with a bar, a strip bar, gambling, or computer games. A rich person can afford a wider range of entertainment.
In fact, there is no yardstick in this comparison. however, if we refer to its human resources. most of the time, poor people have the idea that by gambling they can get money instantly and easily. but actually, thoughts like that are what trap them into gambling addicts. in fact, in most cases most of the poor prefer gambling on the lottery. yes, because, if someone is lucky, unmitigated, the reward they get can make someone rich instantly. well, this mindset is still being maintained by them.
On the contrary, in contrast to the rich. at the very least, there are differences of viewpoint and mindset among these comparisons. rich people are more likely to spend their time doing business, work, or so on. and when they have free time to gamble, they just do it for fun and leisure. plus, they do it without hoping for any luck. but in truth, addiction will never know the rich or the poor. because basically, humans are vulnerable to something fun. So, addiction can happen to anyone without exception.