i saw a post here once asking about whether banning gambling will actually solve some problems. well even with gambling deemed illegal, it has not completely disappeared from a country. for example, in north korea gambling is illegal for its citizens.
but there are still gambling events that take place most often organized by some authorities or really rich and powerful people. i guess that making gambling illegal is just a way to make it less accessible to the general public but the rich always finds a way.
Even in countries where gambling is banned, the people still finds it what they can privately do as long as they are not doing it openly, this also shows that eradication of gambling cannot be 100% effective, because in one way or the other, some will still maneuver their way of the regulation in gambling to gamble, but as I've said, they may only have to be more diplomatic about it by not gambling in an open atmosphere, in other for them not to face sanction.