Jerry Z. Muller in Foreign Affairs:
Recent political debate in the United States and other advanced capitalist democracies has been dominated by two issues: the rise of economic inequality and the scale of government intervention to address it. As the 2012 U.S. presidential election and the battles over the “fiscal cliff” have demonstrated, the central focus of the left today is on increasing government taxing and spending, primarily to reverse the growing stratification of society, whereas the central focus of the right is on decreasing taxing and spending, primarily to ensure economic dynamism. Each side minimizes the concerns of the other, and each seems to believe that its desired policies are sufficient to ensure prosperity and social stability. Both are wrong.
Inequality is indeed increasing almost everywhere in the postindustrial capitalist world. But despite what many on the left think, this is not the result of politics, nor is politics likely to reverse it, for the problem is more deeply rooted and intractable than generally recognized. Inequality is an inevitable product of capitalist activity, and expanding equality of opportunity only increases it — because some individuals and communities are simply better able than others to exploit the opportunities for development and advancement that capitalism affords. Despite what many on the right think, however, this is a problem for everybody, not just those who are doing poorly or those who are ideologically committed to egalitarianism — because if left unaddressed, rising inequality and economic insecurity can erode social order and generate a populist backlash against the capitalist system at large.