The creators of copyright law never imagined a world where everyone could have a free library of a lifetime of books in their pocket, and where copyright would eventually be extended to make this impossible.
This creates urgency to change the law (e.g. back to the original 12 year copyright terms), challenge the law in the courts as archive.org has been doing, or disobey it on principle, as the operators of Anna's archive, Z-library, and Scihub are doing, heroically and at great personal risk.