It's normal for people who have turned gambling into an addiction. I think they can get addicted to other habits besides gambling. I mean, they're people who are prone to addiction. That's why in some countries there are limits to the ability to gamble. The most common and well-known of these is the legal age limit. That's why we can't wait for them to make sensible decisions, and that's why some countries have drawn some limits on legal gambling.
You reminded me of the situation in the country I actually live in.In here no one can gamble under the age of 21 and even by implementing this limit most people past this age were prone to addiction,an addiction to such a high level that prompted the government to completely ban the small casinos that we had spread throughout the city and only made legal the two big ones.This somewhat solved the situation of people not going to gamble physically but this has not solved the online gambling problem,the addicted persons always find money to play online,meaning that you cannot force by law something that is in people DNA,they will find a way to go and gamble.