In late February, Clarivate (parent company of ProQuest and eBook Central, among others) announced a transition away from offering one-time perpetual licenses for its ebooks and digital collections in favor of a new subscription-based content access strategy. Library Journal has been providing extensive coverage since the initial announcement.
The displeased reaction from the library community has been swift, resulting in Clarivate announcing an extensive of the original timeline, again covered by Library Journal.
For a thoughtful and comprehensive response from a librarian, Siobhan Haimé’s (University of London) opinion piece is highly recommended reading.