I feel the importance of user privileges distinction, as I see it from a server perspective and organization managed devices. Some would argue the insignificance of this in the personal desktops.

However, I believe that the community structure of Linux is benefiting everyone. It is a general purpose kernel, that gets improvements from various different sectors. In the current space, where most servers run Linux and most desktops run Windows, desktops are not benefiting from filesystem or scheduling optimizations implemented for servers.