Content companies have repeatedly demonstrated that they do not care about cultural preservation.

Just as one example, the original versions of Star Wars shown in theaters are essentially lost now. Lucas re-cut them for home release and added horrible color grading, CGI, and even plot points. There isn't a franchise much more culturally important than Star Wars, and they can't even preserve that.

It took the (copyright-infringing) work of individual fans to try to re-create them as best as they can, and they've done a very good job. But those original prints are sitting in a warehouse somewhere, rotting away, never to be scanned in the quality available today.