I lived in Australia for quite a while. It's a terrible example of what can happen. There was recently a very good BBC article on it and the connection between sports, gambling, and marketing: https://www.bbc.com/news/articles/cx2yg3k82y0o

Similar to many other toxic things, once the genie is out of the bottle and the government gets used to the revenue it generates, there is a large disincentive to tackling the problem.