I'm thinking Justin Bieber will follow the same path at some point.
In 1986 ,a guy that I was working with joined a fairly well known music group . As the group became more successful this guy was "swallowed" up by the fame and became involved with drugs . By 1995 he was spending all his money on drugs .Luckily for him he became friends with a guy who got him into rehab and he told me he has been clean since 2000 . Today he is a mega superstar in the music industry ,not as a performer but behind the scene .
As with Elvis there was no one to tell him no and to keep him in check.
I'm not comparing Justin to Elvis in any way other than he's surrounded by people who don't have his best interest in mind and only see the dollars signs .
It's to bad these young stars fall into the dark hole.