I’m pretty sure he wants to keep SpaceX out of the public markets for certain. I think he’s suggested Starlink might IPO, but no hint that SpaceX would. Doesn’t want to have to answer to public investors for his long term vision there. Doesn’t want to deal with shorts and other BS.I don't know why Elon would want to do this. He isn't a fan of having his companies be public (I can understand why, particularly with Wall Street's behavior and the questions at the start of the shareholder meeting.)
So I don't know why he would voluntarily put more of his companies into that situation
If he IPOs Starlink, he can benefit from the SpaceX halo on a company which Wall Street can love, one with a reliable revenue stream and predictable goals. That would be a big fund raiser for SpaceX and give him the ability to reward employees his employees with publicly traded options.