That was very much a "get this off my hands" sale. Lucas wanted to retire from running the company, to leave the day to day to others, so he'd be free to focus

That was very much a "get this off my hands" sale. Lucas wanted to retire from running the company, to leave the day to day to others, so he'd be free to focus on the occasional story elements inbetween caring for his new child. I reckon the price was lower than it should have been, in exchange for informal promises of letting him hang around at will. Which they did, in fairness, although they ended up simply ignoring what he'd say.