Short answer: globalization hurts the developed world in the absence of real technological breakthroughs (energy too cheap to meter, something we use a lot gets

Short answer: globalization hurts the developed world in the absence of real technological breakthroughs (energy too cheap to meter, something we use a lot gets can now be made for half the price, etc.). A richer world just means more competition for scarce things. The rational policy for a self-interested superpower might be to ease up on globalization.