Most of the time IT is in a gatekeeper position because they're held responsible for systems that malfunction due to overconsumption of their limited resources, yet at the same time requests for more resources go unheeded.
I've literally been in the meeting where I've been chided for poor performance due to oversubscription and also told no, we can't spend more money on it, either. What are you supposed to do besides ration resources when demand exceeds supply?
This.. exactly this.. remember kids, if you like technology and want to be involved with it as a career, stick in the areas where you "make" something. (Developer, hardware, something)
IT operations is a horrible, horrible, place to end up. In 99% of companies you're stuck in the exact situation described above, shit on from both sides, and you're managed by bean counters who haven't got a clue.