Since the advent and maturation of the virtual machine, the base OS ju7st has not mattered. You can change OS as easily as drinking a coke - unless you are using the MS hypervisor Hyper V. What will keep MS in the running is Adobe products. There are no near Linux/OSX/Chrome equivalents. Eventually Adobe will port to Linux; but the market is not there yet.
As far as MS cutting employees, one question that intrudes on my mind is how many of those soon to be dismissed employees are H-1B's. I put my money on none/zero/zilch. This becomes important because every year MS is screaming for more H-1B's; yet in this round of cut employees there are up to 700 qualified employees.
What? Where are you?
The lovely and always happy-to-phone-home 'Creative Suite' runs just as poorly on OS X as it does on Windows.
Further, you might be surprised about all of the high end creative software that runs on Linux. Interestingly, that stuff is so high end that if you have to ask the price, you can't afford it.