I completely support your right to deem people fascist at a whim and ban them from your web properties.
And what about when those web properties are monopolies? What about when those monopolies regularly collude in broad daylight so as to lock out persons and companies from being able to host products in marketplaces, infrastructure, and even process payments or access banking?
The situation is considerably more complex with Amazon. For one, hedberg10 stands to gain little from terminating business relationships with political opponents of the incoming administration. Amazon does. I’m not sure my right to be able to buy eBooks from a variety of suppliers in a competitive market is being given due protection.
If I have done activity that deems I am a fascist based on a corporations policy, that's totally fine. Don't see a problem with that. Unless you think ISIS should also exist on Twitter promoting their beheading video series