This frustrates the shit out of me but I have a feeling it has everything to do with mindshare. Windows just has the majority of the mindshare and a lot of decisions about information technology are not necessarily made by technically savvy people. Even technically savvy people make poor choices. I had a director once tell me that he prefers proprietary software to open source because it gives him somebody to sue if the software fails. Obviously he is neither a lawyer nor much of a reader because the terms of use and conditions basically indemnify the software company.
Linux and BSD are superior in almost every way. You could literally run an entire organization on Linux Mint as the desktop. Even before Linux Mint was a thing, I had a contract job supporting a rollout of CentOS to the desktop at a small publishing company and this was back in 2005. This company did absolutely everything systems related on CentOS. If this company could do it 18 years ago on CentOS, I can only imagine it is going to be even easier today.
I am reminded of the old saying: