Security.

They want everything to be managed by Windows because they’re managing Windows themselves from Azure or Intune or whatever.

Corporate IT around the country is basically being instructed that the best and only viable security policies are the ones Microsoft writes, which also just so happen to involve all of their products exclusively. Insurance companies are starting to demand compliance with Microsoft’s security recommendations. It’s going to keep getting worse, and even though there should be heavy regulation on this monopoly, there won’t be.