What causes alcoholism when you have 3 fabulous sons and lots of dough?

So one of my stepsons came from money, got his degree, met his wife who has her degree and they married and have three fantastic sons as in handsome , sweet and sober. His mother gave each “child” a six figure inheritance two months ago. I know; it’s amazing, huh? The stepson has been teaching junior high for twenty five years; his wife teaches there too and the two sons who aren’t in college yet attend school there. Sometime within the last couple of months this pillar of the community stepson was caught (we don’t know the details) with half a pint of Vodka in his desk or closet and was fired !! Maybe he was given a warning before this? I don’t know. He is in a live in rehab for a month. Do you think he’ll ever be hired to teach again? His wife is very controlling; I mean he can’t even have a credit card! He’s a big, good looking, sweet man of fifty with everything going for him. What do you think happened? They’re in a gorgeous town of about seventy thousand people. His poor kids; I feel sorry for them.