Is the only imaginable system for AI to exist one in which every website operator, or musician, artist, writer, etc has no say in how their data is used? Is it possible to have a more consensual arrangement?
As far as the question about ethics, there is a lot of ground to cover on that. A lot of it is being discussed. I'll basically reiterate what I said that pertains to data rights. I believe they are pretty fundamental to human rights, for a lot of reasons. AI is killing open source, and claiming the whole of human experience for its own training purposes. I find that unethical.
"Public" is a tricky term. At this point everything is being treated as public by LLM developers. Maybe not you specifically, but a lot of people aren't happy with how their data is being used to train AI.