What if the gov takes over SpaceX overnight?
When that happened in Iran 1953 the CIA fostered a coup; Cuba is under embargo since the 60s triggered by Fidel nationalising sugar mills; Chile's coup in the 70s with CIA support was triggered by nationalisation of the copper mines; invasion of Panama in the 80s was from tensions with Noriega wanting to take over the canal's assets.
Venezuela's sanctions were because Chávez nationalised oil under PDVSA. The rift with Bolivia's Evo Morales was from gas nationalisation.
So if the USA just takes over someone's private company it will be absurdly hypocritical, and shatter even more the USA's international reputation, the added risk to businesses in the USA after this precedent opens will probably also be of concern.