It's possible this guy is just wired wrong, and he was a lost cause from day 1.
But, I can't help wondering if he took the wrong path - in part - because of the way athletes get treated in our society. If you show athletic ability at a young age, then you get moved into a different category, and people treat you differently. People want to be your friend, and hang around you, because you could be a "future star." In the case of male athletes, women will be only too eager to "befriend" you. Famous coaches will fawn all over you and promise you the world.
That kind of treatment would go to almost anyone's head. A kid with a strong family and support system can keep a level head and not fall prey to the star-making machinery. But a kid who lacks that family base and support can easily be seduced by the dark side.
So, did Jeff Jones fail society, or did society fail Jeff Jones? we may never know the answer.