Do companies still utilize windows 3.1

https://cybersecurityportal.com/use-windows-3-1-just-brought-entire-airport-paris/
The fact companies still have windows 3.1 is pretty crazy, but I have actually seen crazier things. If they have actually put a lot of cash into it and it still does exactly what it needs to do then I think by all means keep it running!

Obviously the airport is geared up with a ancient computer system called DECOR. This computer system is utilized by traffic controllers to send out interactions to the pilots, alerting them of the climate condition.

DECOR is so ancient that it is still working on Windows 3.1, an operating system that was released back in 1992. The assistance for the os has actually also been closed down by Microsoft but Paris Airport felt it was right to keep utilizing it.