I think licensure might also give the parents more of a hammer to work with should things come to a lawsuit. Often what people/programs get sentenced for is not the true real crime, or the worst thing that happened to the kid, but some little "t" that somebody forgot to cross. Desperate, angry family plus creative, determined attorney equals full body press to find something, anything that these people can be held accountable for.
Think Randall Hinton got his due? Think the charges even approximate what he should have been on trial for? Perhaps that is a bad example, my brain isn't working up to speed right now, but the general gist of what I'm trying to say is still in that ball park...