Libraries as bookstores - Affiliate status for libraries

A recent OverDrive press release sets up libraries a gateway for ebook purchases. "For every retail sale referred from a WIN (Want It Now) Catalog, the library will earn a credit for the entire affiliate fee." OverDrive handles library ebooks for 15,000 libraries worldwide creating quite a potential for a large customer base! Ebook checkouts are way up (200 percent from 2010) so patron interest in ebooks via libraries is there. I'm dying to hear how this is going to work out for the libraries involved. Will it work? Seems like a better kind of privatization than off-loading librarians and library staff!