As far as I am concerned, we should be preserving knowledge and making it accessible to the public, not locking up knowledge forever.
That's semantics, you can just as easily frame that as "creating knowledge that will be added to the wealth of human knowledge".
The point is that IA's idea about unlimited parallel lending (that is, essentially, a free download portal) is a problem unless there's a different way to compensate the authors & publishers. I don't think they suggested a different way and are trying to make it about "knowledge itself", and not their unilateral abandonment of laws & contracts.
Look, do you want books to sit around uselessly not being read because everybody have to decide if they want to learn based on textbooks costing hundred of dollars?
If you believe people should be compensated for creating knowledge, then buy a copy. I certainly do.