Say Lucas had handed over his company to Kathleen Kennedy, but without selling it to Disney. Would things still have played out roughly the same? Are Disney basically just funding them (and forcing to release Solo in May)? Or would there actually be a significant difference? Maybe the sequel trilogy but no spinoffs?
From what I understand Solo was being developed by Lawrence Kasdan even before the Disney buyout, and Lucas had at one point planned to write/direct Episode VII himself. So it’s possible that in terms of the kinds of films we’re seeing (sequels, spin-offs) things would be the same, but other things would be quite different I’m sure (who’s making the films, when they’re being released, etc.).
I’m pretty sure that Lucas was also brainstorming ideas for the Death Star plans backstory before he sold to Disney, which was the premise for Rogue One.