I mean you can dread it all you want, because that is LITERALLY how it works today. Google, OpenAI and Microsoft already have multiple lawsuits for stealing people’s copyrights to train their LLMs.
Copyright is assigned automatically. If I make a blog post, that is automatically my copyrighted material. As the creator I get to choose how it’s used, not Google
If I took some proprietary Google code and used it without permission you know damn well they would sue my ass into oblivion. Copyright has to protect the small as well as the giant.