> Is the only reason a switch hasn't happened down to 40+ years of inertia?
What you call "inertia" others would call "compatibility". We have 30+ years of muscle memory and working software to keep in mind. The same shortcuts which worked in Windows 3.x should mostly still work on Windows 1x. Apple created the Command key early in their ecosystem's lifetime, so they didn't have as much backwards compatibility to worry about.
And even back when the "Windows logo" key was introduced, there were already reasons to not do the change you propose: first, we already had a large amount of Windows 3.x software and users to consider, and second and most importantly, Windows 9x could be used with keyboards without the "Windows logo" key (and they were very common back then). Even today, that's still possible: you can still use a keyboard without both the "Windows logo" key and the "Menu" key, and everything still works perfectly fine.
(I do agree that it would better if clipboard shortcuts used something other than Control everywhere, but that ship has long sailed.)
What you call "inertia" others would call "compatibility". We have 30+ years of muscle memory and working software to keep in mind. The same shortcuts which worked in Windows 3.x should mostly still work on Windows 1x. Apple created the Command key early in their ecosystem's lifetime, so they didn't have as much backwards compatibility to worry about.
And even back when the "Windows logo" key was introduced, there were already reasons to not do the change you propose: first, we already had a large amount of Windows 3.x software and users to consider, and second and most importantly, Windows 9x could be used with keyboards without the "Windows logo" key (and they were very common back then). Even today, that's still possible: you can still use a keyboard without both the "Windows logo" key and the "Menu" key, and everything still works perfectly fine.
(I do agree that it would better if clipboard shortcuts used something other than Control everywhere, but that ship has long sailed.)