A small company benefits more than anyone since it's not rocket science to learn these things so you can just put on your system administrator hat once every few weeks, would not be ideal to lose that employee which is why I always suggest a couple of people picking up this very useful skill.

But I don't know much about how it is a real world and normal 9 to 5 I have taken up jobs from system administration to reverse engineering and to even making plugins and infrastructure for minecraft I generally only work these days when people don't have any other choice and need someone who is pretty good at everything so I am completely out of the loop.