I would laugh. I'd be surprised there isn't a backup of old source control somewhere and the same backup if done well would have the assets too. But, I will preface this with. Non gaming software that no-one would ever want to use again. Maybe a museum would want it.

But I suspect the only surviving version (if it's even on the drive) survives in the attic of my old house (family still live there, I didn't just abandon it in a sold house). A very very old version of non gaming software on a hard drive of an old 90s unix system.

So, you know it's not that surprising. Depending on how old the games are.