I disagree. We all learn from our experiences (or we should, anyway). It's entirely possible that he has learned over time that certain decisions were mistakes based on how they ultimately turned out. Or, he could just be a crabby bastard who cashed in early on and now he pees in everyone's cornflakes whenever he's given the opportunity. Hell, he has two strikes in his favor. He's old, and he's an artist. I'd be disappointed if he wasn't a crabby bastard.