That might be part of it, but I don't think it's the only or primary motivation. But we don't really get to know. They can and have used this power to effectiv

That might be part of it, but I don't think it's the only or primary motivation. But we don't really get to know. They can and have used this power to effectively censor legal content. I don't think this sort of power is something that a private entity should hold. Being able to refuse service is fine for a random restaurant when there's 10 other options available, much less so for a duopoly that provides a key facet of modern life.