Coppola called him out on it recently in some interview about Youth Without Youth, saying something to the effect of "ok, George, I've done it. Now it's your turn."*
I mean, seriously, I just don't get why he's still in the Star Wars pool unless he really thinks he's doing the film world a favor by continuing to make all this money off of Star Wars so that he can do things like give 150 million dollars to USC. In all honesty that's been my theory for a while now, especially since the GOUT debacle. This is what people are thinking of when they talk of Lucas' attitude towards the fans. It's as if he's saying "Oh, you want me to spend my money on restoring the half-finished versions of Star Wars? Too bad, move on to other movies or make your own, but leave Star Wars to me."
*I could be remembering wrong, it might've been an interview with Lucas where that topic was brought up.