A friend has a 16 year old autistic son, bright kid but video games have taken over. He would rather soil himself than leave a game, threatens suicide, he steals money to pay for games, he's violent if anyone interferes by taking away WIFI, he threatens family members with violence. The police have been called numerous times, the family is desperate. An addiction clinic is over a year away.

That is a tough situation.

Research suggests that those with ASD - particularly boys - are more likely to develop an addiction to games. That being said, what does he like besides games?

Another resource I found is here: Video Games and Autism: Helpful or Harmful?

This may give you a perspective you haven't considered before.