Considering the times I've seen airport connecting flight displays replaced with bluescreen "Your Windows 7 PC is out of support", shopping mall digital ad disp

Considering the times I've seen airport connecting flight displays replaced with bluescreen "Your Windows 7 PC is out of support", shopping mall digital ad displays showing that a QuickTime 7 & iTunes patch is available, or the self-service grocery shopping terminals displaying a Windows XP style "Ethernet cable is unplugged" notification, I'd guess not as much thought is going into those kinds of concerns as we might like. I think I have heard of some retail chain stores using FreeDOS with a dedicated keyboard-driven accounting package to run the business, though. (In this case I'm thinking of one of the larger Luxottica owned optometry chains.)