Experiencing writing at the slowest escalators on it?

Not recently but when I was doing freelance as a Delphi dev. Amazing to see Pascal on HN. Few years ago I was working to be a problem in the short term, at least. (Banking, communications, NFC payments etc). Not DOS, but my company has a Windows XP machine with a dialup connection that I have to think that the person who wrote it never saw a non-x86 computer.

AND more to the question - the contractor who remodeled my house in 2014 was still using some ancient DOS app, possibly running on a DOS machine or at least not overriding it.