Is using an example everybody agrees on to justify supression of free speech on platform that are de-facto public spaces. There is a lot of middle ground bewtw

Is using an example everybody agrees on to justify supression of free speech on platform that are de-facto public spaces. There is a lot of middle ground bewtween moderation in a small forum and a complete digital exile of dissenting opinions. For example, imagine how could you be affected if Zuckerberg really hated you. Not just Facebook/Instagram/Whastapp. It wouldn't be too difficult to him to convince other companies to also ban you, including cloudfront protected sites and credit card companies. I realize that five years ago it would have sounded completely insane, but the precedents for those kind of bans are growing fast.