Earlier quoted context omitted.
He could do that with any number of stagnant companies. Think bigger picture. Tesla: Sustainable transport SpaceX: Becoming a multiplanetary species Twitter: Free speech in the public square IMO it's actually the most important mission of the 3 since it's the basis for societal progress.
Here's a more sane interpretation of Musk's "mission" for these companies: Tesla: Gimmicky electric cars as a status symbol SpaceX: Maximizing profits on government space contracts Twitter: Tactical manipulation of stock prices All of them are about increasing Musk's clout and net worth.
That would be the United Launch Alliance, Sir.