Well really, I think it's the responsibility of the parents. In an ideal world, a parent can decide when their child is mentally ready to engage in an industry like that, and can also decide where the line is safe (teases? partial nudity? full softcore? hardcore? intense BDSM?)
The reality of course though is that not every child has a responsible parent, and many children have parents who would happily exploit their children to make a couple thousand extra dollars (which really sucks, but it's also just how the world is). So as a general legal policy, putting the burden on parents may lead to substantially more harm of children.
The reality of course though is that not every child has a responsible parent, and many children have parents who would happily exploit their children to make a couple thousand extra dollars (which really sucks, but it's also just how the world is). So as a general legal policy, putting the burden on parents may lead to substantially more harm of children.