It's a sad story, but one that has been played out millions of times before. Alcoholism is no respecter of persons. It doesn't care what a bright future you could have. It doesn't care what a bright past you had. It doesn't care if you are poor, middle-class, wealthy, or obscenely wealthy. Alcoholism only wants to kill you.
I truly hope he wises up and gets the help he needs. Alcohol has taken down men MUCH bigger than him.