Quoted from Darscot:
Ah poor George they gave him six billion dollars and told him his ideas were shit. I wonder if he will ever be able to get over it. The funny part is they didn't even bother to come up with a plan or an idea, just figured they would pay directors to make it up as they go. George did his damnedest to destroy Star Wars and Disney gave him a mountain of cash and said hold my beer.
I imagine he sold it, from what I read, feeling fatigued at the idea of pushing forward himself. He hoped Disney could continue, and he would assist with structure and guidance. They then decided to either outright deceive him or that they wished for a cash in via a reboot on generic themes.
They chose the latter, and in doing so created a mish mash of characters, all built on, then destroying the old structure, all the while not creating anything dynamic in the process.
He has a right to be upset. Most people that have watched Star Wars globally, haven't seen THX or American Graffiti. Those projects won't ever be his legacy, so sure it makes sense that he'd feel betrayed over this outcome. He's always echoed that.
That said, he certainly made the decision himself.
As for the perception that he did this deal for cash. He did it for other film makers to continue his universe, not destroy it, all the while DONATING billions of dollars in the process.
I'm never sure why he's ever been demonized. He seems a pretty amazing, and creative fellow.
https://m.huffpost.com/us/entry/us_2067145
“I am dedicating the majority of my wealth to improving education,” Lucas wrote in his pledge letter. “It is the key to the survival of the human race. We have to plan for our collective future — and the first step begins with the social, emotional, and intellectual tools we provide to our children. As humans, our greatest tool for survival is our ability to think and to adapt — as educators, storytellers, and communicators our responsibility is to continue to do so.”
https://www.forbes.com/sites/briansolomon/2012/11/04/donating-star-wars-billions-will-make-george-lucas-one-of-the-biggest-givers-ever/#52e8c6732adb