My LB is a reminder on #WorldDigitalPreservationDay that even famous works that had big audiences can be lost in whole or in part: https://www.kozaksclassiccinema.com/the-broadway-melody-1929/ . As I've noted before, the majority of silent pictures are now lost as well.

Similar fates may await popular culture today that's streaming-only, locked down with DRM, dependent on proprietary infrastructure that then gets discontinued, or otherwise under too tight control or limited availability.