The restrictions put on governmental power are proportional to the power we give the government. Your employer can't imprison you, collect taxes from you, send you off to war; pretending "social media add tech company" is in any way comparable doesn't add much to the conversation. You first have to give google the right to send you to jail, before you can demand due process from them (that's a dystopia I think no one wants, not even the tech CEOs).

If you don't like the policies for Google, Facebook, others, make your own. Maybe like minded individuals will follow (most likely they won't). Once you no longer have this right then we can talk about censorship.