sad to think the closure of OiNK and What will definitely have set the wheels in motion for some cultural artifacts to become lost. Preservation should be legalized and its absurd to claim it harms sales when Universal Music has $2B revenue
What is easy to overlook is that it's not just cultural artifacts in the sense of the recording itself. These kind of sites also had fans meticulously fill in all the metadata about the history and context of a song, film or whatever. I remember a blog post by a historian lamenting the loss of all that community-build knowledge when these sites where shut down (and I bet it wasn't just one historian who felt that way…
Absolutely, the metadata on What was beyond wikipedia level all completely user managed meticulously. Slightly different versions of releases all catalogued and rips verified to a high standard. This is before we even get into the fact it was all connected so similar artists were navigate-able you could actually start from a band you enjoy and dig into other similar music right from the same site.
The cataloging goes way beyond anything Apple offered at the time and anything Apple, Spotify, Tidal offer today.