Rich ppl aren't protected from addiction. If you're rich you'll bet more money but it doesn't guarantee you're going to win. Poor ppl bet less money but they're at the same risk they're going to get addicted.
You are correct and I have seen a lots of people who are rich but they are gambler and addicted on drinking. Actually they can do what they want but it could not effect to local people as they can manage funds easily. But those who are poor people they can commit various shameful event for which others can suffer a lot.