Like many other media content providers, libraries and museums are increasingly moving their content onto the Web. While the move itself is no easy process (with digitization, web development, and training costs), being able to successfully deliver content to a wide audience is an ongoing concern, particularly for large libraries.
Much of the concern is financial, as most libraries do not have the internal budget or outside investors that for-profit businesses enjoy. Even large university libraries will face serious budget constraints that even other university departments, such as science and technology would not face.
Creating a scalable infrastructure and also distributing a large digital collection that can handle multiple requests, requires planning that many librarians have not even imagined. They must stop thinking in terms of "one-item-per-customer" and start thinking in terms of numerous users accessing the same information simultaneously.