Yeah it was a steal! But I think the state of Star Wars back then was a burden for Lucas, who knew something bigger than Clone Wars had to be done in the next decade and he just wasn’t able to endure another trilogy (and seeing how difficult it seems to „just“ make a good trilogy and the hate that follows a bod one, I can see what his difficulties were). And he didn’t need to share with anyone, how many billions does one guy need in the latter half of his life?