Sticker price isn't that big a factor in enterprise in my experience. For one thing, Dell, HP, and Lenovo's enterprise PC lines are more expensive than their consumer lines, so the difference isn't all that big. Also, there have been many studies showing that Macs offer a lower TCO than Windows PCs.

I can see this happening, though it will vary widely by industry for sure. I've been working in roughly 50/50 Mac/PC offices for over a decade now. Users like Macs, Apple has good enterprise management and security features, and Microsoft is kind of shitting the bed with their cloud migrations. Microsoft lives by inertia and backwards compatibility, and they're throwing away that advantage by making these transitions difficult.