: Publishers use DRM to restrict sharing, reselling, or backing up books to non-approved devices.
: Digital libraries are subject to platform control; accounts can be closed or licenses revoked if a service shuts down, leading to what some researchers call the "erosion of ownership". 2. Trends in Online Book Purchasing buy and download books online
A critical theme in modern digital publishing is the distinction between purchasing a physical copy and licensing a digital one. : Publishers use DRM to restrict sharing, reselling,