You're right; there's definitely an argument to be made that maybe Amazon.com shouldn't be punished for what AWS does, but I figure a decision like what was done to Parler must have gone all the way to the top so my two cents is that none of the conglomerate is innocent. I'm just so horrified about what happened, it's hard for me to give them any benefit of the doubt.

Incidentally: it's funny, because a long time ago, I had a simple, pure, free market ideology and was generally opposed to most anti-monopoly ways of thinking, but I've changed over the years (especially during the last year or two). I think Amazon should be broken up (the entity that runs AWS should be an entirely different company than the entity that runs the retail site, for example). Same with Alphabet. The search engine (Google), the video site (YouTube), the phone company (Android)... those all need to be broken apart. I feel a bit like a hypocrite for adopting this way of thinking, but what can I say? I have a new appreciation of the dangers/risks that can come with zero controls over this sort of thing.