But the issue here is that they could do this without notice, and without "due process" and for frivolous made up reasons.
I'm not concerned with Amazon's reasons, or Facebook's reasons, or Google's reasons, or Twitter's reasons, i'm concerned with their ability to censor public speech for any reason.
KDP is a commercial arrangement governed by a contract.
If Amazon violated the terms of the agreement Castalia can sue or arbitrate.
Or do you think anyone should be able to use the Kindle publishing platform Amazon developed with no conditions?