The IT department is rewarded for their ability to keep bad things from happening, and that means there is a pressure to create and then preserve stability. Meanwhile, you are rewarded for your ability to make good things happen, meaning that a certain amount of risk-taking is a necessary condition of your job.
Risk-taking undermines stability. Stability deflects risk-taking. You think your IT department are jerks for not helping you do what you want to do; they consider you an idiot for installing software without their permission. Also, because of the way your interests are (mis)aligned, you are both right.
Oh, too true