“These concerns translate into Fulcrum’s four design principles — Durability and Accessibility (to ensure longevity) and Discoverability and Flexibility/interoperability (to provide credit).” That these principles cannot or do not extend to the current business models of commercial platforms (and include “for free” ebooks along with “for fee” ebooks), is only an absence of imagination on the part of the teams leading the commerical platforms and the senior leadership of the publishers.