Wheel

You may think my example is silly. We give out contracts and ask some private companies to run our canteen.

In fact, our public hospitals also outsource a number of other services - notably cleansing and portering. We also let the Fire Services Department to run the ambulance system, and the Electronic and Mechanical Services Department to cover the corresponding areas. Some hospitals in other parts of the world also outsource patient catering, paramedical service, pharmacy, and so forth. After all, organisations should excel at what they good at, rather than trying to be all-rounded and do everything by themselves.

Or, to put it simply, you don't want to invent the wheel again by yourself, do you?

In that case, why should extra-terrestrials have their own team on information technology?