I'm not sure who you are considering as others involved. Certainly the addict's family is involved but I can't support the government legislating that relationship any more than I could them (gov't) setting rules on who gets the TV remote and when, or who decides how to spend the family paycheck.
If you refer to society, through medicare, etc. paying the costs of addiction, I'd urge to solve that problem by favoring the elimination of those requirements rathering than legislating what all of us can and can't do.