But donate them to whom? The books were one step away from the pulpers when they bought them in the first place, who's going to take them that values them more than that?
Also, these companies are not charities. What do they gain out of all that extra expense?
First people complained about them pirating, now people are complaining about them following copyright. It should be clear at this point that the people complaining don't really care about either, they just don't like AI.