Like in what format?
Tiff, txt, doc, avi, jpg, xml, mp3, zip have all been around for 30 years now and I cannot think of any new software/OS that cannot handle them. A 30 year old book, tape, picture in physical format however will need to have been stored carefully.
Computers are more and more moving to the 'cloud'. My 10 year old laptop can run AAA games because high speed Internet has now enabled cloud based solutions to become viable replacements for local physical hardware. Even CPU limitations are now disappearing.
However when I do look at jpgs, or even Ai files from the 1990s it's amazing to see how much resolution and general advancements in digital processing has occurred. The files however are all perfectly readable.