Rarely, but some children just come out wrong. There are plenty of people who lived a regular, normal life and spawned a serial killer.
Sending a child to these sorts of camps is sort of like someone being surprised that they are being fired. If someone is surprised they are being fired, then management failed along the way and missed all the opportunities to address whatever the issue was. Same here–these are going to be terrible parents who could have worked on the problem over the past 15 years who then give up and want someone else to fix the problem for them.