Who is doing the growing when there's no one left to make stuff and/or those that remain don't know how the current stuff works? If he's going to rehire new people, who is going to want to work in an organization where you are deemed essentially the enemy of growth and are easily expendable?
You're assuming that (1) Tesla and SpaceX's missions compare to that of Twitter and (2) the people at those companies like Elon and want to work specifically for him.
Many people working at Tesla and SpaceX view Elon as a distraction to the mission, not an accelerant other than putting the pieces in place for the companies to exist.
There will be some hiccups, attacks and slanders pieces in the news.
It will become the place where corruption get exposed if the government don’t manage to close it down.
Quite a show for sure.