Sorry, I should have expanded on the Mac example. My point was that just as you wouldn't expect Windows 10 or the latest Mac OS to run on ancient hardware, you can't expect the latest hardware to continue support for old software past a certain point. x86 hardware and operating systems aren't created in different universes, they are designed alongside one another to work together.
They are two entirely different situations. Non-techie enteprise users have no afinity for their processors, only the applications they rely on and the interface they're familiar with.