I'll play devil's advocate for a bit and make a logically consistent version of this lunacy:
"Freedom of speech does not mean freedom from consequences" is the applicable phrase here. These companies can deplatform you and refuse you service in other ways because it IS their property they're dealing with. On the flipside it is also the customers' right to boycott if the company makes a statement they don't like (or services those that do). This general principle can be seen as common ground between liberals and libertarians. The only thing stopping the right from doing the same shit is the fact that they're not autistic cunts who reee at any sign of dissent.
There was a debate between Foucault and Chomsky decades ago that I never bothered watching all the way through. But one highlight I did sit through was Foucault's response to Chomsky advocating for an anarcho-socialist homostate. As much

as Foucault spouts, his response was pretty much on point, perhaps more than ever in this day and age: relying on social influence to moderate human behavior can end up being more oppressive/restrictive than any government.