Assuming you can read the media, it's actually not hard to read old DOS word processing formats on modern PCs: both software and services exist to convert them,

Assuming you can read the media, it's actually not hard to read old DOS word processing formats on modern PCs: both software and services exist to convert them, and, worst-case scenario, you can still run old DOS word processing software on modern PCs through virtualization and emulation. Wang WPS files on open-reel tape, say, or Locoscript files on Amstrad 3" (not 3.5"!) floppies, are admittedly much harder to convert, but by no means impossible. Worst-case scenario, firms exist that'll convert things like this as a service.