It's the consequence of parents who don't understand how to effectively discipline beyond corporal punishment simply dropping the ball and not having any discipline at all.

I'm also not a fan of corporal punishment, I believe there's limited applications where it's effective but most parents who use it do so as a pardon the pun, blunt instrument rather than a precision tool. You run the risk of simply teaching the lesson that you obey because if you don't you'll get hurt, which fair enough is not totally off base but what happens when the child is bigger and stronger than the parents and they haven't matured?

Rather I think it's far more effective if you simply have clear simple consequences for misbehavior and the children know it. Then simply giving a warning is enough to stop any negative behavior.