Is the distinction of government censorship and censorship by entities which have a dominating position on some communication channels and with a budget larger than some small countries really that sensible?

Or put differently, is there even a "public space" where you could speak freely on the internet? It's almost always some company's server that you're using. Distributed and decentralized solutions only manage to compete in niche applications while face to face speech manages to not rely on any private carrier.