Corporations get away with a lot precisely because they're not the government. That’s the trick: shift functions out of the state and into private enterprise, and suddenly the protections that would have applied no longer do. Every "free speech" thread eventually devolves into the same conclusion: the First Amendment only binds the government.

So the threat model isn't uniform. There's no one-size-fits-all. Depending on how you assess risk, you might reasonably conclude that government services pose less danger than private actors, and someone else might see the inverse.