I think Musk is a grifter but even I think those picks are unfair to him. Respectively that's a company with no significant accomplishments yet (it's only two years old so I don't think that's even a knock against it), a company he didn't found but purchased under shady circumstances and has had a lot of scandals, and a company he "founded" a lot like he "founded" Tesla.

If you want to showcase a company he unambiguously founded which is unambiguously successful, why wouldn't you pick SpaceX?