In country after country, the already vast gap between the rich and poor has widened dramatically over the past thirty years. The incomes of the rich are sky-rocketing, whilst those of poorer people stagnate or plummet; and the lion's share of global wealth is increasingly concentrated in fewer and fewer hands. Inequality is not just a problem of poverty and the poor; it is as much a problem of wealth and the rich. The growing wealth gap is best viewed as a proxy for how effectively elites have constructed institutions that extract value from the rest of society. Understanding the mechanisms...