If you read a book and use the instructions to build a bicycle you are learning a new skill and this is obviously not exploitation of people's work. When you r

If you read a book and use the instructions to build a bicycle you are learning a new skill and this is obviously not exploitation of people's work. When you read a book and copy this book partially or entirely to create a new book or create a derivative work using this book without citation it's called plagiarism and copyright infringement. It is not only exploitation, it is against the law. If you feed an entire library to an AI to generate new books without source citation and copyright agreements it is not only exploitation, it is against the law. We can call this automated plagiarism and copyright infringement, and automated or not, it is against the law. Except if you use public domain books. It wouldn't be illegal but highly unethical considering there are powerful companies with big pockets bending public domain's laws to avoid their assets to be public available (I'm looking at you Disney), but that is another story.