Tell that to ISVs in the fields of AEC and almost in every engineering branch: AutoCAD and ArchiCAD are the only exceptions that run in MacOS. That prevents moving to Windows if you work in such industries. Until now, I could do that in Macs by running Windows inside VMs. Now, it won't be possible anymore. And no, ISVs are not going to start porting to Mac. That part of the Mac sales will be lost (and I can see it already in my Architecture School: 5 years ago, every student had a Mac, while nowadays, almost no student has a Mac anymore).