That already happens on webcams, and there's so much of it I don't see how anyone could even try to put a cap on it.
Girls with cams will ultimately decide what happens next. I'm looking forward to hundreds or thousands of cuties who are clearly under 10 but say they're 12-13 hoping that more boys will notice (which I think is adorable btw) doing livestreams and saying stuff like "If you give us a like we'll twerk nay-kedd!!!"
Then eventually the argument will move from how do we stop it to should the girls be allowed to keep donations from their fans (obviously yes). Once LE is so overwhelmed by how much harmless fun content is being put out (and we're kinda there already) they'll have no choice but to focus on more important things instead.
There I go dreaming again.