Let's take this to the ultimate. The whole concept of outsourcing is to lower consummaton prices by minimizing production costs. So let's outsource our entire production economy so our consumpables are the cheapest possible. Then what exactly do you do for a living? What would the world want from the US?
Do you want to produce in life or just consume?
Most of us seem busy doing something, and for some reason, the median income in real terms just keeps going up. What the US does best, and generates the most highly value added, are things requiring heavy brain power and creativity. I don't expect that to change, since the US sucks up the best and brightest like a vaccuum cleaner - now more than ever.
The only flaw in what you said is that outsourcing never reduces prices to the consumers. They only reduce costs and increase margins. The shareholders wounldn't have it any other way.