I still maintain that Elon should simply create his own platform with the ideology and framework he thinks will work best.
If it truly turns out to be great, it will find growth.
He's in a unique position with a massive following, where he is in fact an "entity" that probably could create the needed interest and and growth for a new, from scratch, offering.
Unlike Trump (also trying to roll his own), Elon really does have fans and followers across a very wide spectrum of ages, backgrounds, political persuasions, etc