Lucas is the same basic person as 1977, artistically. Star Wars came out 50% the way he wanted, TPM came out 90%--his constraints in the early days and his heavier collaboration hid his true flaws. The only problem and the only real change since 1977 is that his ego grew sometime in the early 80s and then took over all other parts of his personality some time in the early 1990s. But then, what would you expect? He was the most revered mogul on the planet, he was treated by us and by even regular joes as though he was a god. In a way, it's hard to blame him for his personality change because its a product of the environment and understandable in some ways if you really think about it. For sure, he has a lot of psychological complexes beyond this, like his stubborness, obsession for control and reclusiveness, but those have always been there, and in fact in some ways the proper harnessing of those qualities was what made his early films good. Once the environment and context changed those qualities started becoming toxic, but in some ways you can't really blame him for the environment he found himself in.