Literally ANY digital format can be converted to a modern version fully automatically once the need arises. You need to solve the problem once, build a tool, and from that moment on you can convert as many files as you need with a single click. This is way cheaper and easier than dealing with paper rot and ink blended by acids from air and paper.
This is overly optimistic. Even just for videos you are going to have to accept either additional quality loss or size bloat when converting older obscure codecs to something your average modern device can play.
What you're saying suggests that those old codecs were superior to new ones (offering better quality at smaller sizes), which is not a case for most of formats. Also the "size bloat" with data from say 40 years ago means little today as space has become so much cheaper. If you have to expand your data from say 70kb to 120kb, which 40 years ago would be a huge deal, today it's something no one will even bother to optimize. And anyway, discussion was not about space economy, but about data being permanently lost, unable to be accessed ever again - which unless the medium is physically damaged is very unlikely scenario. There are always people willing to reverse engineer old formats, just look at the state of retro gaming now. I converted my original ZX Spectrum games from tapes to digital files, and can play them on my modern computer almost 50 years later.
