Lucas has really proved himself to be a big Hollywood fraud. Notice that his best movies, i.e. THX, Raiders, SW:IV-VI, american Graffiti, were all made before he became so powerful that no one could tell him, “No”. Now that he has total control of his films they reek. SWI-III were an incoherent incompetent mess.
Now, ripping off the people who made him what he is, whose credit he steals, is beneath contempt. Typical Hollywood Mogul: Talk like a Hippie, act like a Mafia Don.
Not only is the fact that no one could tell him “No” a problem, but IMHO, his movies were only good when he didn’t write the screenplay! (specifically they were good when Larry Kasdan DID write the screenplay!)