Apparently HarperCollins has decided that allowing the library to loan out its eBooks in perpetuity is not a good business decision. The publisher has moved from allowing libraries to license an eBook for all the loaning out it wants to having that book loan agreement expire after a set number of loans.
This is sort of like making the library pay again for that book on the shelf after it has been loaned out for a year. The new agreement with HarperCollins and libraries allows the eBook to be checked out 26 times before the book expires. That would allow for a year’s worth of loans at one every two weeks. Some librarians are calling for a boycott of HarperCollins eBooks.