Basically the title.
I have seen the EU-OS/Suse discussions for some months now. However, Ubuntu/Arch/Fedora are extremely mature projects. So competing against them will be hard.
I want to know how realistic the scenario (described by the question) is.
There’s also the fact that a legal order could be seen as violating the First Amendment, and I make no illusion that the Administration will ignore it (like the rest of the Constitution) but barring a bribe, IBM or anyone impacted could at least go to the courts and get a slam dunk injunction for some period of time.