So, let me get this straight... You think that "free speech" protections provide a mechanism that forces companies to maintain relationships with people that they don't want to do business with? So, if someone is harassing employees, being damaging, or any litany of other inappropriate behaviors, that company is still required to provide service to that person because that person has a right to service?
Rights are not absolute. Having a right does not entail having the right to abuse that right to violate the rights of someone else. Employees have the right not to be harassed. If a company stops doing business with you for that it defends its employee which is legitimate.
What is Apple defending here? Not their right not to be criticized because that doesn't exist. Their NDAs? That would be legitimate but locking Rambo out of his account won't achieve that aim.
So the only reason to disable his account is to punish him. That's the job of the state, its courts and executive. Not of a for-profit company that does not even allow him to know why he is being punished, let alone a hearing or an appeal court.
You have not thought this through, at all...