On the other hand, I have 6 keyboards near my desk and only one has a Windows key. YMMV, I guess
I have not personally seen a PC keyboard without a windows key for 20 years, YMMV.
Ruggedized keyboards for self-service kiosks don't typically have a windows key or ctrl, alt, and ESC (and if they do there is usually a hardware switch that disables them)
"Ruggedized keyboards for self-service kiosks" does not fall into the category of most keyboards