Summary: History is once again curtailing IBM's narrative; Capt. Tom Watson Jr. (left) went on to become the President of IBM; only after he had supplied material support for Stalin's army in his capacity as a pilot. It's always about money. Source: Official United States Air Force Website
From the book Taboo Genocide: Holodomor 1933 & the Extermination of Ukraine (by Kris Dietrich, 11 Sept 2015, 1074 pages)
From what we can gather, the tram ticketing system does not use Windows; we never saw it crashing or rebooting (or showing some Windows logo) in decades, so we assume it runs some kind of Linux