We see no problem in assuming that people need the lowest-common-denominator operating system in computer to suit the people instead of the people learning how to use a proper computer, though.
If something is mission critical, then it should NOT be running on Windows. And if people find it a little harder to use because it takes a little bit of learning, so be it.
"It's not as simple as that!" Bullshit. If something matters, it's worth extra energy to do it right. In reality, it's only extra energy at first. Once people learn how to use it, it's LESS energy because it works, it works the first time, and it works properly, unlike Windows.