David Harvey — Afterthoughts on Piketty’s Capital

But why does this trend towards greater inequality over time occur? From his data (spiced up with some neat literary allusions to Jane Austen and Balzac) he derives a mathematical law to explain what happens: the ever-increasing accumulation of wealth on the part of the famous one percent (a term popularized thanks of course to the “Occupy” movement) is due to the simple fact that the rate of return on capital (r) always exceeds the rate of growth of income (g). This, says Piketty, is and always has been “the central contradiction” of capital. 

But a statistical regularity of this sort hardly constitutes an adequate explanation let alone a law. So what forces produce and sustain such a contradiction? Piketty does not say. The law is the law and that is that. Marx would obviously have attributed the existence of such a law to the imbalance of power between capital and labor....

As Alan Budd, an economic advisor to Margaret Thatcher confessed in an unguarded moment, anti-inflation policies of the 1980s turned out to be “a very good way to raise unemployment, and raising unemployment was an extremely desirable way of reducing the strength of the working classes…what was engineered there in Marxist terms was a crisis of capitalism which recreated a reserve army of labour and has allowed capitalists to make high profits ever since.” ...

... Marx pointed out that capital’s penchant for driving wages down would at some point restrict the capacity of the market to absorb capital’s product.... Many thought that lack of effective demand underpinned the Great Depression of the 1930s. This inspired Keynesian expansionary policies after World War Two and resulted in some reductions in inequalities of incomes (though not so much of wealth) in the midst of strong demand led growth. But this solution rested on the relative empowerment of labor and the construction of the “social state” (Piketty’s term) funded by progressive taxation. “All told,” he writes, “over the period 1932-1980, nearly half a century, the top federal income tax in the United States averaged 81 percent.” And this did not in any way dampen growth (another piece of Piketty’s evidence that rebuts right wing beliefs).

By the end of the 1960s it became clear to many capitalists that they needed to do something about the excessive power of labor. Hence the demotion of Keynes from the pantheon of respectable economists, the switch to the supply side thinking of Milton Friedman, the crusade to stabilize if not reduce taxation, to deconstruct the social state and to discipline the forces of labor....

But then the wheel turned full circle and the more pressing question became: where is the demand? Piketty systematically ignores this question. The 1990s fudged the answer by a vast expansion of credit...

There is, however, a central difficulty with Piketty’s argument. It rests on a mistaken definition of capital. Capital is a process not a thing. It is a process of circulation in which money is used to make more money often, but not exclusively through the exploitation of labor power. Piketty defines capital as the stock of all assets held by private individuals, corporations and governments that can be traded in the market no matter whether these assets are being used or not....

Money, land, real estate and plant and equipment that are not being used productively are not capital. If the rate of return on the capital that is being used is high then this is because a part of capital is withdrawn from circulation and in effect goes on strike. Restricting the supply of capital to new investment (a phenomena we are now witnessing) ensures a high rate of return on that capital which is in circulation. The creation of such artificial scarcity is not only what the oil companies do to ensure their high rate of return: it is what all capital does when given the chance. This is what underpins the tendency for the rate of return on capital (no matter how it is defined and measured) to always exceed the rate of growth of income. This is how capital ensures its own reproduction, no matter how uncomfortable the consequences are for the rest of us. And this is how the capitalist class lives....

There is much that is valuable in Piketty’s data sets. But his explanation as to why the inequalities and oligarchic tendencies arise is seriously flawed. His proposals as to the remedies for the inequalities are naïve if not utopian. And he has certainly not produced a working model for capital of the twenty-first century. For that we still need Marx or his modern-day equivalent.

Reading Marx's Capital with David Harvey
Afterthoughts on Piketty’s Capital
David Harvey | Distinguished Professor at the Graduate Center of the City University of New York