The flip side, is that they would not have been able to execute so well with Azure etc if the Windows org had too much of a say about pushing Windows as the OS of choice everywhere. Winning in a brand new space, especially one that might be disruptive to other business units, sometimes necessitates letting the new org do its own thing.
Only to the ignorant. Tens of billions of dollars a year are spent on the platform. Either all of those customers are misinformed about the capabilities of Azure or you are. I’m going to rely Occam’s Razor here.