As Drupal gets bigger and bigger in the marketplace, it is moving into areas where system administrators still hold sway. Dedicated servers or server farms have a different set of needs than a shared host when it comes to monitoring and performance.
That's not even Drupal specific. For any high-end web app, it's useful to be able to interact with it for administrative purposes through standard system tools. On Windows, that's the Windows Administrative Tools or IIS. On LAMP, that could be a unified web app like webmin or a KDE control panel plugin or a Gnome applet. Getting a web app into certain organizations requires offering existing sysadmins a way to integrate it into their existing management workflow.
But what pieces of the app do sysadmins want in their existing admin tools? Calling all sysadmins, what do you want from us? :-)