> Who the heck has been using DOS (!?) until "pretty recently"? On what machine?
Not "DOS" in the classical sense, but a good corporate travel agent will probably spend the majority of their day in Amadeus or Sabre on a terminal emulator app - and be much, MUCH faster than clicking around in web portals.
Yes I don't disagree... Up to not long ago I knew employees at at least one bank still having one DOS app to navigate between customers' bank accounts (with all the family links / various accounts) and it was fast and quick.
But that's quite different from "someone using only DOS up to only 2026".