There isn't a human in the loop.
AI is clearly more derivative than that. It's too early to call for sure, but it's hard to imagine what a "victory" for copyright holders even looks like at this point.
[0] https://en.wikipedia.org/wiki/Authors_Guild,_Inc._v._Google,....
They can provide you a snippet, within the legal limits of what they are able to reproduce. They can also direct you to buy a copy of it through them, if the publisher has a deal with Google. Seeing as all roads lead to Rome... most books in Google Books are also available for purchase through Google. Funny system.