I agree! He has to be held accountable for his own actions. The best thing you can do for him is tell him your concerns about his drinking and let him figure it out. You can't help him if he doesn't want to help himself. You've been with him for a long time, so I feel your pain and wish you the best.
Sadly, you can't convince him he's an alcoholic. He's going to have to figure it out on his own that he has a problem, then you can hope he does something about it. The only thing that family can do is take care of themselves and perhaps go to alanon.