There are two different types of value, simultaneously existing. The content is valuable, certainly. But the actual physical artifact is also valuable, for different reasons.

I liken it to prototype/prerelease software - the data is certainly valuable, but at the same time a physical artifact with actual provenance can be worth a pretty penny too. It also irks me when people say "oh, it devalues the physical artifact if you preserve the data". No, because the physical artifact itself cannot be duplicated.