I happened to rewatch a couple of fifth season episodes the other night. It was right after Medillean bombed. Vince had just come back from Mexico, couldn't a role, was nearly broke, and had to do personal appearances to keep from filing bankruptcy. Ari took him to task for, basically, having a shitty work ethic and not "playing the game" to stay a star.
It got me thinking. Who in real life is the closest to Vince pre-happy ending? By which, I mean an actor that started out well regarded, made it to the A list and then ruined/nearly ruined his career with a combination of ego and bad choices.
I was sort of thinking Nic Cage but I'm open to other suggestions.