I was so sad watching the video and I must say you have mentioned the three worst factors influencing drug abuse. These three are very strong and one can be destroyed if not monitored properly.
Parents most times are the cause. They don't have time for their children and they claim to be busy at work not to spend time on their children and their education.

I think if parents and society cooperates and discipline every child involved in drug abuse, it will stop.
Some parents do not want the society to discipline their children and they watch them spoiling away their lives.