He Gave us Star Wars! And... Star Wars?

Actually, the reason Fisher and Hamill didn't have a greater career in movies isn't because their acting abilities weren't on a par with Harrison Ford's. Hamill went on to become a celebrated stage actor and does a ton of voice over work. He also writes comics. He became frustrated with Hollywood because he kept getting offers for roles that were too similar to Luke Skywalker and he resented it, so he took another route and decided to try different avenues that would let him embrace acting but without having to sell out. Carrie Fisher, who I agree was not a very strong actor, mainly left acting due to personal problems (alcoholism, drugs, depression, and other typical Hollywood self-destructive issues). As for George, clearly he's a genius, but he's a genius who is rather selfish. You can see that beginning to manifest when Warner Bros. took control of "THX 1138" and edited it without his consent. After that he distrusted the studios and decided to do everything his way. He became stubborn, and mixed with his intelligence, arrogant and selfish. After having had a major success with "Star Wars" he backed out of directing and focused on technical filmmaking and producing. He became greedy. Now, he'd rather make films that would make him money and satisfy his own desires as a filmmaker than please his fans, who made him his money in the first place. As I said, he's a genius, but a selfish one. Other than that, you're summary here is pretty much dead-on. It's funny, but Lucas once said that he wanted to make small, avant-garde films that would be more independent of the studio systems and wouldn't rely on big budgets or special effects. He once said that special effects were nothing without a good story and that no one would want to see a film that was just special effects. He should go back and listen to those old interviews he did and maybe he'll realize he was right then and that he's drifted from his roots.