Every time I try to play a game that I paid for on iOS that no longer works because Apple doesn't care about backwards compatibility, I'm reminded of how thankful I am for Microsoft's efforts here.
I really think the amount they've improved Windows under-the-hood over time is impressive, especially taking into account the constraints they've had to work within.
On a related (though somewhat tangential) note I must say that I think MS tying WinRT (which as I understand it is the clean rewrite of the Windows API) to the Microsoft Store initially was a massive mistake. I still don't have a clear, confident impression of where I can or should use WinRT, even after all these years.