I have seen marriages survive. There's a great one in my church. He drank and she nearly left him. Then he had a heart attack. This woke him up to the fact he can not drink any more. He is a very different man now and they love each other.
It only works because he stopped drinking.
It can survive. But, most marriages, both people have to realize that their life is out of control and totally unmanagable.
We only have control of our own actions. And that's what I practice these days.