n China, by contrast, manufacturers can deploy thousands of collocated engineers to introduce needed changes overnight, and large supply of labor allows to ramp up and ramp down capacity quickly. There is simply no factory capable of employing 250,000 workers day and night in the USA, surrounded by flexible and capable suppliers. So the location decision isn't really about labor costs — it's about manufacturing risk and where that risk is best managed (for a fuller discussion of risk in Business Models, see our recent HBR article)."
Another endorsement of the reality of global supply chains? Is "national manufacturing" in comparison to "most competitive manufacturing" politically desirable? While the former is termed being "protectionist", the latter is in tune with the notion of a flat, globalized world. There are lots of people on both sides of this divide in every country, I guess.