Thats basically the function of an editor. That’s not a function that lends itself well to automated, hands-off processes.

So they’d have to back to charging some amount of money, which leads us back to square one.

Big guy, little guy doesn’t matter in this case. An editor costs money and either Big Name Publisher can eat the cost or No Name Author, but it doesn’t benefit Amazon much to eat it.

Yes, but in this cases you have users or algorithms to find potential problems and a human will check should be more economic that having an editor reading the entire book or watching the full video. Related to youtube is weird they do not have a trust system for channels with a larger reputation have a human double check the algorithm , it would at least reduce the bad publicity when you accuse a channel with many subscribers of ridiculous things that were not in the video.