Don't blame the caretakers, the parents, or the individual for his acts of free will. Worship the all seeing Ozzy if you dare. If any thing is responsible for Jack Osborne trying hard drugs it is first and foremost the sins of the father. But, fame is to blame in part. Even the show producers should take some blame, since they had to be around facilitating through the blind eye peering luridly from behind a camera as he cohorts with the notoriously heroine chic promoters of the hard core. It is all about ratings and sound bites.
1 Kings 15:3 And he walked in all the sins of his father, which he had done before him:...
Actually I'm not much of a fan of Ozzie. I just realize that he has spent his entire life surrounded by drugs and drug useres. He is in a unique position to determine what their effects might be on a person.