That is where the &quot;weirdly inefficient from the borrower&#x27;s side&quot; part comes in. It&#x27;s a form of price discrimination. People who can&#x27;t afford to pay full price, pay by their inconvenience instead.<p>I think we found a good equilibrium--library buys a copy and only lends it out one at a time. We know that works. Why change it.