Ah, "space invaders," indeed. Musk does seem to have ambitions toward corporate, if not personal, domination of space development. And if we let our government privatize space, I pity those poor souls who find themselves working in orbital facilities with no public oversight as to living and working condition. To see two sf treatments on the subject by two rabidly libertarian authors, but with very different outcomes, see "The Moon is a Harsh Mistress" by R.A. Heinlein, versus "The Mandel Files" by Peter F. Hamilton. (The latter is actually a trilogy, but all very good.) In both visions, the corporations who control the launch and extraterrestrial facilities become de facto totalitarian governments within their environments.