Yup, there is no difference at all between rich and poor in gambling, both have the same chance of winning and losing but maybe with different amounts, and that is the only difference between poor and rich gamblers
Another difference is their state of living before and after gambling. A rich person can walk away from losing in gambling and still be able to be okay afterwards but a poor person most likely won’t be able to afford anything else after losing in gambling.
If they do win though it will change the poor person’s life and maybe not so much change the rich person’s life.