It's not just digital that suffers this problem, although it suffers it more acutely. There are entire formats that are effectively gone. I've got music on cassette tapes that was never moved over to CD. Same with vinyl. I have a legacy LaserDisc collection. I should probably be glad that I'm two young for 8-track. There are also books that go out of print. The underlying problem is how copyright law works in the United States. Copyrights last too long. And DRM makes things much worse.<br>When technology moves forward, not everything follows it. There is a lot of forgotten history out there.