Three basic attributes that should be found in any library business model for ebooks:
Inclusion of all titles: All ebook titles available for sale to the public should also be available to libraries.
Enduring rights: Libraries should have an option to effectively own the ebooks they purchase, including the right to transfer them to another delivery platform and to continue to lend them indefinitely.
Integration: Libraries need access to metadata and management tools provided by publishers to enhance the discovery of ebooks.
These terms and more come from “Ebook Business Models for Public Libraries,” a report (pdf) that describes general features and attributes of the current ebook environment and outlines constraints and restrictions of current ebook business models. The report also details several benefits publishers stand to gain from allowing public libraries to lend their ebooks to library patrons.