The last point I made is the moral argument "in theory private companies compete against each other but government has a monopoly on legalized violence." Government must be constrained because you can't get away from it.

Now it is true commercial monopolies can also exert coercion on their customers, so we have antimonopoly laws. These laws likely need updates to deal with natural monopolies coming from the strong network effect in the internet era. And the interaction with free speech right in social networks will be an extremely challenging issue.

TikTok takes down content it doesn't like on a regular basis. It's pretty well known if you use tiktok. Not saying they shouldn't be able to do that, its part of how they got their For You page so popular.

Whether a website wants to display tiktok or not is the same thing - it'll do whatever it thinks will get more users.

The moral claim is private companies maintain private property for the benefit of their customers.