Wealth is not merely being shared across the world due to globalization, it grand total is increased.  Trade is not a zero-sum game.

True - the problem is that it is being increased without being shared. Using average GDP numbers is becoming increasingly misleading in a number of countries as the increase seems to benefit only a happy few. Case in point the USA where median wages have been, at best, stagnant in the past 5 years - and have increased little in the past 30.

In the long run, we're all dead. John Maynard Keynes