For the same reason they pay $80 for a single use copy of an ebook: because users expect it and don't really care about the excuse. Users see that other librari

For the same reason they pay $80 for a single use copy of an ebook: because users expect it and don't really care about the excuse. Users see that other libraries offer a service, they see the services they want to use and no number of spreadsheets will make them happy with answer "no".