I'd rather see Elon spend life in Solitary Confinement. It would be the ultimate irony that the same government he did his best destroy takes away his freedom for life.
He should have it worse than the average prisoner though. Padded white cell with nothing in it, and maybe he has to wear a straight jacket on the weekends. He'll also only eat Nutraloaf.
I think the ultimate punishment for all oligarchs and fascists is to live with nothing but their own thoughts as a stimulus. They took the gift of their mind for granted and poisoned it with greed, misinfo and hate. Let them live in it
So if we give him an always-on TV with access to any given news-media, does he see the world and despair that he isn't out there ruling over a happier people? Or does he read it that everyone out there are fools and only I can fix this?