But if the government implements strict rules regarding it, those who will push its limit into illegal gambling will be punished severely and they won't even think about it as their alternative. But those people who are drawn into addiction will only find their way to play even though it's not in their country. most of them have access to online gambling to suffice their hunger to play which is the case where the government has not yet enough control because of how tricky the internet is.
Online activities are something many can't control no matter how good the government is. Unless they will be putting a team or unit that will just simply focus on monitoring online activities of gambling. But in today's era what will matter most is if the website is register rather than checking if addiction occurs in that player.
That is the thing, when the only way you could gamble was by going to the casino then there was some sort of way to regulate it or to make it illegal but now that gambling can be done online and it has become so popular then this is not longer possible, after all even if gambling is forbidden in a country what is stopping a person from getting some bitcoin and gamble that way? Nothing can stop a person like that since the government is not going to know that this person is gambling, so governments have no option but to make it legal and while this is not the case in all countries around the world it will eventually happen.