Arguably, they did in the past - and the current situation is an immune (over)reaction to that. Outsourcing is easier than figuring out how to get something done while navigating around all the regulations and CYA measures, so that things look fair to the people (otherwise they'll make a ruckus), and/or can't be easily portrayed as unfair by your political enemies (who will try to trick the people into making a ruckus).