If you own a book, it should be legal for your computer to take a picture of it. I honestly feel bad for some of these AI companies because the rules around copyright are changing just to target them. I don't owe copyright to every book I read because I may subconsciously incorporate their ideas into my future work.
Something missed in arguments such as these is that in measuring fair use there's a consideration of impact on the potential market for a rightsholder's present and future works. In other words, can it be proven that what you are doing is meaningfully depriving the author of future income. Now, in theory, you learning from an author's works and competing with them in the same market could meaningfully deprive them of…
This is one of those mental gymnastics exercises that makes copyright law so obtuse and effectively unenforceable.
As an alternative, imagine a scriptwriter buys a textbook on orbital mechanics, while writing Gravity (2013). A large number of people watch the finished film, and learn something about orbital mechanics, therefore not needing the textbook anymore, causing a loss of revenue for the textbook author. Should the author be entitled to a percentage of Gravity's profit?
We'd be better off abolishing everything related to copyright and IP law alltogether. These laws might've made sense back in the days of the printing press but they're just nonsensical nowadays.