Long Tail and Library World

I find the Long Tail argument about libraries fascinating. Because of internet, it is no longer necessary to visit a library to read a book; it can be read on a laptop with a wireless connection, right in your home. This kind of an omnipresent library, addresses two somewhat unrelated issues pertaining to libraries in the internet age - firstly, the local book store or public library is just not big enough to carry all the books which patrons/buyers are likely to find interesting. A digital library doesn't have any such physical constraints. Secondly, in a situation where paper-and-ink books can exist only at one place at one time, all the people who are waiting for a book to become available have to wait patiently for their turn. Digital books don't have any such constraint. Thus, digital books can be at several places at same time. This characteristic of digital libraries removes the demand-and-supply restriction and books are able to reach the "long tail" of demand. These observations together, pretty much assure digital libraries' position as the killer-app of the library universe.