I am sorry, but that can't be the only reason. At my job we are free to choose. Some have MacOS, almost everyone else has Windows, I am the only one using linux. But the joke is that Windows users are heavy users of WSL and RStudio. We are not forced, or even suggested to use Teams, Office or whatever tooling Microsoft has, and in fact meetings were I am invited had to be done in Zoom instead of Teams only because of me.

I believe that it is more a familiarity issue, and seeing Linux/Mac as an obscure tool only usable by gurus.