If you still want to use that old software program but can’t because it just won’t run on Windows 10, or maybe you just don’t want to run it on a modern computer. Also there is the problem of modern photo editing suites and office software now being a subscription model, for the occasional user that can be unaffordable.
These vintage computers are sourced on demand and because of web standards these computers are unsuitable for internet use. Whatever software is required it is sourced from stock or other online places. So how about transferring files? USB drivers are included so that modern usb flash drives (memory stick) can be used on them so you can transfer files to your modern machine for use.