I don't see Trump caring what happens to the ISS, up to and including uncontrolled re-entry.

Blue Origin has New Glenn which is partly reusable but has only flown once and did not land. Also they have serious organization challenges so they are a very distant second to Spacex. In terms of reuse and also cadence.

The best thing that could happen is if Musk left Tesla and SpaceX and let them continue under adult supervision.

SpaceX has actually made space cheap enough for a lot of other stuff to make sense, but without competition the profits are as big as Musk needs for R&D for his hobby of LARPing sci-fi he clearly hasn't read deeply (in this case Red Mars; in the cases of Neuralink and the SpaceX drone ships, The Culture).

NASA does not directly subsidise launches as far as I can telk.

What NASA does do is contract launch services through competitive tenders.

SpaceX only opened this door by arguing they were cheaper, and only kept the door open by then actually delivering, unlike all the other big players in the US.

Unfortunately for everyone who likes space stuff but not Musk personally (e.g. me), SpaceX is currently a lot better than everyone else — at least, better than everyone outside China, they're harder to speak of confidently.