Nvidia denies pirate e-book sites are "shadow libraries" to shut down lawsuit
arstechnica.com
arstechnica.com
Citation needed.
What's allegedly claimed seems extremely strange since downloading copyright works without having obtained a license has been prosecuted very actively.
I don't see how there's any legal uncertainty at all here. If you own a book you can scan it and train AI on it, but if you don't, you can't legally download it even if you're only training AI on it.
Simply, if this is permitted there's no copyright. After all, this is a matter of commercial activity, not just some person downloading a book which he can't afford and is curious about.
This is not illegal in all countries. If Nvidia did that e.g. in Switzerland, there would be no legal issue. Only making copies or publishing works without permission would be an issue. So why should those sites be shut down for the whole world, if there are many countries where it is legal to download books from them? Countries where such downloads are illegal could use different technical means instead to prevent their citizens from doing so, not affecting the rest of the world.