Usenet was great 10-15 years ago but nowadays it’s flooded with fake / private downloads and retention is shit simply because the few remaining backbone providers comply with takedown requests. Absolutely useless for older content by any major studio. It’s all new stuff which is mostly garbage anyway. We were able to get a ton of “this old house” recently though.
No but this isn’t really limiting sales of the book in any way. I buy real used books, I buy new books sometimes. I go through a few audible credits a month. I also pirate books if I feel like it. I’ve had books I bought and gotten rid of, then years later decided to pirate it and read it again. Anyway used books are so ridiculously cheap it’s very rare for me to buy a book new, often it’s a gift for a friend.
I also use ChatGPT almost every day, and while I have asked it for the summary to a book I didn’t feel like reading, it has never once replaced “reading a book” in my life. You can also get the summary to most books on wikipedia if that’s all you want.
I’ve used it for 15+ years and it’s a huge downside. Older content used to be widely available, but more often then not anything popular is removed within a few months of posting. It is actually pretty great for obscure content that won’t get taken down. It’s cheap but a whole new thing to learn. It is faster than torrenting directly to your own computer but a seedbox blows usenet out of the water as far as speed. 50-100 MB/s easily (at least using private trackers).