I wonder if Lucas created the PT primarily to keep LucasFilm alive? Its artistic outcome would not have been important as long as it generates money. Back in the 80s he also saw ESB & ROTJ as mere vehicles to fund his elaborate Skywalker Ranch. Somewhere between ANH & ESB the filmmaker disappeared and the businessman took over. Didn’t he say during infamous “White Slavers” interview with Charlie Rose that he wanted to do the ST himself and that he had to care about his employees? Maybe it was easier to sell LucasFilm than to stem another trilogy himself…
Late reply to this one but this is actually true. Young Indiana Jones in the early 90s was a huge money loss for Lucasfilm. He had to come up with something that was going to generate income. This was partially why he went forward with the prequels.
I think Lucas has a love/hate relationship with Star Wars. With Empire he really did want to farm out the star wars movies to other people and he would build his dream Skywalker Ranch studio. However he had a very hard time letting go of wanting to control Empire and the quality of that film. When he did Jedi he was onset every day I believe as opposed to the hands off approach he had with Empire. After Jedi he was finished with the whole thing until he decided to finish the saga with the prequels which would make him a ton of money and he would have absolute control over the output of the film.