I agree, this is a couple layers deep.
1) If it's already a game beyond their age. The law didn't work.
2) If it's a game beyond their age and the parents are OK with it, the law didn't work.
3) If they don't have permission to use the parents Credit card, there are laws against this, so the laws didn't work.
4) If they are using their credit cards with the parents permission and are yet under 18, still illegal, the laws still failed.
I don't get how people can think, oh shit.... People are doing things and breaking laws, let's make more laws.... Cause they obviously work.
People play stupid games, and win stupid prizes. Making stupidity illegal isn't an option, you just have to step back and hope they learn.