Government does not only take action if there is no alarming results of gambling, if they see that gambling is already rampant and it already affected lives especially the poor ones, the best solution to that is just to ban gambling, and I think some countries have already done that.
Like I earlier said, placing a ban on gambling won't and can't never solved the problem. The counties that have tried this solution (banning) what effect has it had? Sure for some time, Due to fear of punishment from the government, the gamblers might take some break off gambling but on the long term infact, it only results to illegal gambling sportbooks which takes away revenue of the nation.
I'm of the opinion of enlightening the citizens on handling gamble addiction, these can be achieved through education especially in the university since most addicts are usually teenagers and young adult.
I can't think of the best solution aside from banning gambling, educating people about gambling addiction is useless IMO, they won't listen, and they are matured enough to understand what addiction is, also, I don't think the government will add a curriculum just to discuss about gambling addiction, and ways to avoid and solve it.
Banning may not solve the problem, but it could minimize it.