Even if the loophole for books is smaller, the point is, it only has to be applied once by anyone anywhere, after which it can be shared freely like any other n

Even if the loophole for books is smaller, the point is, it only has to be applied once by anyone anywhere, after which it can be shared freely like any other non-DRM'ed file. I'm not convinced that the total amount of internet sharing of a work is decreased too much by the fact that is was in a physical form to start with.