A LOT LOT of people like BRAINS don't deal with manufacturers and it shows. They run equipment and hardware that runs on legacy code that ONLY windows support. Hell even ubuntu has cut out 16 and 32 bit support. Its 64 or nothing for them. Well that's great, until you have a manufacturing line that produces a critical military component and the custom legacy software that runs those machines ONLY works on 16bit code. LOL there might be a linux distro that supports it but then you have to rewrite the software. Microsoft has a monopoly on those people and they know it. There are power plants that are running programs that were developed for Windows 3.11 and THATS why THAT code (and registries) are still in Windows 10.
Ask me how I know.
So yeah convert over to MAC. That's all good for me. I'm not a Windows Fanboy and I run about 4 OSes through VMs on my home system, but Windows does have reasons to exist. I'm not happy about it, but MAC will not be able to get those customers unless they spend a shit ton of money and resources backbuilding to support legacy code and hardware. NTVDM exists in Windows for a reason.
EDIT-- Just checked the NDA to make sure i can say this. Haliburton has an entire production line that runs a version of MS office that has to be enabled through NTVDM. The reason for it is that the excel sheet that tracks and monitors their entire production line for logistics capabilities as well as the program that CONTROLS THE FREAKING MACHINES ONLY WORKS IN EXCEL 4.0.
The guy that wrote the code has been dead since 1998 and there is no one who understands the operation enough AND has coding capability to rewrite the code to my knowledge
EDIT 2 -- BTW brains if you think APPL is going to charge 300 a head (plus server plus yadda) you're insane. RHEL charges 180 and they're a much cheaper alternative than anything OSX has ever done in the enterprise realm. I'd be shocked if it was less than 600 a seat.