Many well-meaning people mistakenly believe that the ultra-wealthy are the source of American prosperity. They do the saving and investment that creates jobs; they are the entrepreneurs who start new businesses and implement economic innovations; and the well-being of everyone in the working and middle classes is ultimately dependent on the health and prosperity of the ultra-rich, it is widely thought.

This belief is largely bipartisan, although obviously more widely shared among repugicans. Since at least the Clinton administration, Democrats have also worked to implement wealth-friendly policies, often called the “neoliberal consensus,” such as free trade, low taxes on capital income, low inflation and deficit reduction.
The fact that repugicans want these things even more should not obscure the fact that both parties generally share the same economic philosophy, differing only in degree. Thus, despite high unemployment, the federal government has done virtually nothing to create jobs; despite the obvious failure of “austerity” programs in Europe, both parties believe that deficit reduction is the principal fiscal priority; and the obsession with minuscule levels of inflation continues to constrain Federal Reserve policy.
There are, however, a few creative thinkers out there saying that our national priorities are all wrong and that the basic premise of where growth comes from is upside down. One of these is Nick Hanauer, an entrepreneur from Seattle, Washington, who argues that strengthening the middle class is the key to wealth creation. And the key to middle class prosperity is good-paying jobs.
In testimony before the Senate Banking Committee on June 6, Mr. Hanauer argued that consumption is what drives investment, not the other way around.
But consumption is constrained by the continuing impoverishment of the middle class due to wage stagnation and high unemployment, which has reduced labor’s share of the income pie drastically over the last 13 years, as illustrated in the chart.

Hanauer makes a simple and obvious point, but one with profound implications for policy. If growth is essentially demand-driven, the wealthy cannot be the drivers of growth because they simply don’t consume enough and raise their spending very little in response to increases in income. How could they? The number of rich people is small and they can already afford whatever they want.