Can we get some vfx or game studio heads in here commenting? From what I've experienced in my career is many studios are run at a very low margin. Doubling the price of the Mac Pro would most likely have an effect.
The farm basically always just runs Linux. Many studios run Linux on the desktop, sometimes Windows, and sometimes macOS.
It's shortsighted. They let many of the people responsible for that wealth float off to more stable industries so a few people can get rich far beyond their contribution.