None of it de facto prevents anything, but if a corporation feels they're being bullied in this way they can sue.
In the Biden admin, multiple lawsuits (interestingly none launched by the allegedly coerced parties) revealed no evidence of such mechanics at play.
In the Trump admin, the FCC Commissioner and POTUS have pretty much explicitly tied content moderation decisions to unrelated enforcement decisions.
Definitely there's possibility for an admin to land in the middle (actually coercive, but not stupid enough to do it on Truth Social), and in those scenarios we rely on the companies to defend themselves.
The idea that government should be categorically disallowed from communicating and expressing preferences is functionally absurd.
