They have the privileged to enjoy more in gambling as they have a lot of money to spend. They do not care if they lose big in the eyes of the people but what is more important to them is they will enjoy. We have different ways to spend our money to be happy and gambling is one of that.
But, here I doubt a rich gambler's long run. Because being a gambler, I do get greedy while gambling and I usually go for higher bet amounts every day to get extra pleasures of gambling. This way if gambler goes, how long he will be able to afford to loose for this gambling entertainments. So, like all people, for rich man also, gambling will not be possible if he follows some certain self control methods.