As always with the "get a businessman in to fix it" appointments, I think people are underestimating the differences between running a private company--even a company in a highly regulated industry, like SpaceX--and fixing the government. You can think of the latter as like running a company with a 535-member board of directors who has complete authority over your budget, and 330 million shareholders, roughly half of whom hate the CEO and will vote to fire him at the next shareholder meeting.
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