Frank Hayes describes more than one IT department here:

How many people in your IT shop understand what gives your company a competitive advantage? That comes down to products, people and processes -- what your company sells, who makes and sells it, and how it's made and sold. Anything that contributes specifically to getting customers to buy from your company instead of a competitor is a competitive advantage. Anything else, well, isn't.

Too many IT people forget that, and optimize their own jobs first, and the work of the company itself second. The key thing they need to remember: they're just plumbers. Other people do the work that pays their salaries, with their (IT's) help.