That doesn't mean you should have the right, if you are a large enough platform, to rule the place at your whims when the content being posted is legal.

There is a real argument that, in a more ideal world, YouTube, Facebook, WhatsApp, etc. would be viewed as infrastructure and regulated as such. Imagine if your power company refused to provide you power because they didn't like that you ran a gas-powered car plant; regardless of their ability to provide for you. Or if your telephone company refused to service you because they didn't like what you might tell your friends or that you were the head of a political party they didn't like.