Change for the sake of change
Whereas up till Windows 7 rolled around, Windows' UI seemed rather consistent and following a 'lessons learned' evolutionary path, Windows 8 was probably the point where MSFT's management got a taste of 'revolution' over 'evolution', and figured that they could take the industry by storm, just like Apple. Thus we got Modern UI ('Metro'), 'touch everywhere' Windows 8 without start button, the flat, dystopian nightmare that's Windows 8 with zero regards to or lessons learned from decades of Windows UIs and its literally half-aborted 'Settings' 'App'. Because everything is an App now, fellow kids~
The development of end-user software should first and foremost be driven by what those end-users want and need.MSFT can then take this feedback and incorporate it into their next release, maybe along with a couple of original ideas of their own. Whatever doesn't work out (hi Clippy) then gets tossed the next release cycle. Lather, rinse, keep end-users happy.
I was happy to move from Windows version to Windows version. Win98 SE over Win95? Win2k over Win98 SE? Heck yes. WinXP improved a lot of UI stuff over Win2k, and Win7 (we don't talk about Vista) improved on that again, to provide a user experience that's based on the culminated experience of decades.
But it seems that MSFT is increasingly less interested in such a development path. They want to surprise the world, apparently, just like their secret love: Apple. The same Apple who can apparently not do anything wrong. Put a charging point on the wrong part of a mouse? Call it innovation! And yet Apple's MacOS doesn't stray that far away from its MacOS <9 roots, back in the PowerPC days and before.
Perhaps ironically it appears that while Apple appears revolutionary, they're actually quite evolutionary, without major disruptions, and easing things over in a transparent manner when disruption is inevitable. Meanwhile MSFT has shifted from that same model to one that is happy to alienate customers with every new release and increasing patch level.
This is not how you build a sustainable business, MSFT. Just FYI.