Investors are buying Musk, like they were buying Warren Buffett with Berkshire Hathaway. Long-term shareholders are not buying space; they are buying Musk. This has been clear to everyone since the beginning; it has been well communicated (look at SpaceX governance rules in Texas), and there is nothing mystical about it.
It's very likely Musk will roll everything up into a single Musk conglomerate.