There are modern better ways to fight gambling addiction such as which I have proposed in my opinion:
> Regularly educating your citizens on national TV programmes about the negatives of compulsive gambling. You can be sponsoring these programmes through the revenues accrued from taxes paid by these gambling companies. Or these companies could as well partner with initiatives and sponsor it.
> Provide skills acquisitions programmes and avenues of adequate job opportunities, because a lot of young people trooping into gambling are doing so as a result of a lack of sustainable means of income which makes them to see gambling is the all embracing means to make money.
I don't think the government can stop gambling even if it wants to. Currently, when I go to social media, I only see gambling ads. Although gambling is completely banned in our country. And a few days ago, I heard that there is a rule in our country that if they find gambling apps on someone's mobile, they will be fined. But I don't think they can stop gambling like this. And regarding the proposals mentioned by the op, I want to say that cigarette packets have the words "Smoking causes cancer", does that make anyone stop smoking cigarettes?