Linux and BSD are found in a lot of places, it is more to do with its design being supportive of all kinds of deployments rather than only just popularity i thi

Linux and BSD are found in a lot of places, it is more to do with its design being supportive of all kinds of deployments rather than only just popularity i think. Windows Server administrators are lot more likely to be "certified" and "trained" by MS approved courses than linux admins and of course it does not help. I would say its more likely to find an average joe ( from a devops perspective) running a linux box than a windows box.