Windows is an awful choice for software development, a job that usually requires a lot of interaction with Unix servers. Microsoft's recent crush for Linux and open source can't fix many years of closed standards, closed protocols, and Embrace-Extend-Exterminate evil culture.
And MacOS, even though it's still loosely based on a Unix *BSD flavor, still falls into the "closed fence" category - brew is nice but can't be compared with the maturity of the package managers on any Linux distro, you can't just recompile or update the kernel on the fly to get support for a new device, and OS internals are purposely obscure to developers. Paying all that money for such a closed box, if you're anything more than an average users, is simply a waste of money.
Linux distros are by far the best environment for a computer scientists - made by developers, for developers - but there's no major vendor that sells machines with Linux pre-installed and supported, and getting Linux installed on the newest Surface or Dell toy is often a challenge that gets many frustrated.
There's definitely a huge gap in the market, and as a computer scientist I feel that none of the major vendors cares to provide me with a solid machine to do my work.