A nice polite and librarian-like smackdown of the PA position from Voices for the Library:
Not only does this threaten a service that has proven to be immensely popular with library users, it undermines the effort by libraries to reach out to housebound borrowers, the disabled and those living in remote areas far from their nearest public library. It also further undermines efforts to reposition libraries and encourage literacy in the digital age, an age where people increasingly question the need for libraries and librarians. A policy such as this seriously inhibits the library service from adapting to current realities and potentially threatens the entire service.
Furthermore, it restricts efforts to provide a 24/7 library service fit for the 21st century. The delivery of remote ebook access has been a highly successful initiative, with many services seeing increased demand, including the return of those who had ceased using the library service. The increased demand for ebooks should be seen as an opportunity for publishers, not a threat.