Suppose the company threw out the disc and bought a new one after it was rented 50 or so times, would that be a meaningful change to the subjective moral fairne

Suppose the company threw out the disc and bought a new one after it was rented 50 or so times, would that be a meaningful change to the subjective moral fairness of their business model? Also, how do you feel about libraries rebinding their books to fix/prevent the books from wearing out?