[jcx]

There's not an easy way to broach the subject. Just tell him you and his family are aware of the problem and ask him if he will get treatment. The in-law's are rich and would likely pay to send him to the best facility possible. You will likely be rebuffed, as he currently has no incentive to change. Why should he? Doesn't have to work or worry about supporting his family & he's not being held accountable for his actions. Don't worry about being a hypocrite or lecturing him, this is about him not you. Being a true friend is caring enough about someone to point out when they are seriously f-ing up, not just being a yes-man.

After you suggest treatment, his wife, his parents, siblings and in-laws should suggest it as well. If he still can't be convinced, you might want to consider an intervention. Everyone gets together and essentially ambushes the guy, tells him they love him but unless he gets help he's being cut off (in every way - emotionally and financially). Do not have an intervention unless everyone is strong willed and will follow through on what they say. There are professionals who will assist with interventions. Interventions are very successful at getting addicts to go to treatment, then the rest is up to them.