They wouldn't necessarily need to add an IT department. They could get a business solution through say ATT, Comcast, Timer Warner, Verizon, etc. Usually with more business classes they get on call ITs. I have a buddy that works for a 3d party IT company that goes and fixes down internet service. Since he is on call most of the employees are salary based for legal reasons. Overall, I do agree that it would cost entirely too much.