The good news is that the world is richer than ever, with $600 trillion in wealth. The bad news is that it is out of financial balance. Since 2000, asset values have risen much faster than GDP; that’s a boon for those who have assets to begin with but doesn’t do much for those who are just getting started and need broad-based income gains. Only about a quarter of the wealth generated came from investment, the remainder was mostly on paper. Moreover, debt has soared, with every dollar in investment generat ...