Anti-gambling laws are not vidoe-game specific, at best they just have to be adjusted to cover them correctly. And these kind of laws are pretty obvious so I don't see why there shouldn't be sensible working laws. There are several reasons for such laws. First of all, not everyone is good at self-control. Then, there is the big problem of this kind of games making so much money, that the alternatives are dying out. In my eyes, mobile gaming already is pretty much dead. There is too much money being made by games which coerce the user into spending more money. This limits the choices and drives more people into these games, even if they have some resistance.