A residential rehabilitation program isn't the only treatment option. In fact AR may not even be in a suitable condition for rehab. Ideally he should first be detoxified and have maintained a detoxified state at home for a period before admission to the program. He could be getting medical and psychological help in preparation for rehab while waiting for a place.Big waiting lists for people to voluntarily get into publicly-funded rehab. Unless the court orders them into it. They could be dead before they get in.
So many addicts, only so much help available through our tax dollars.
I know I'm making it sound too easy and it's not. But getting some money for private rehab isn't a quick-fix either.