Agreed. I also think point 4 has an analogy in domains like art/marketing. As humans become better at recognizing the idiosyncrasies of AI-generated content,

Agreed. I also think point 4 has an analogy in domains like art/marketing. As humans become better at recognizing the idiosyncrasies of AI-generated content, it will become ghettoized. I'm expecting something like a revival of organic, human-produced content (with a premium cost, of course).