Inequality is the result of political forces as much as of economic ones. In a modern economy government sets and enforces the rules of the game—what is fair competition, and what actions are deemed anticompetitive and illegal, who gets what in the event of bankruptcy, when a debtor can’t pay all that he owes, what are fraudulent practices and forbidden. Government also gives away resources (both openly and less transparently) and, through taxes and social expenditures, modifies the distribution of income that emerges from the market, shaped as it is by technology and politics.

Finally, government alters the dynamics of wealth by, for instance, taxing inheritances and providing free public education. Inequality is determined not just by how much the market pays a skilled worker relative to an unskilled worker, but also by the level of skills that an individual has acquired. In the absence of government support, many children of the poor would not be able to get basic health care and nutrition, let alone the education required to acquire the skills necessary for enhanced productivity and high wages. Government can affect the extent to which an individual’s education and inherited wealth depend on those of his parents.

Laws and policies reinforce how a government feels about inequality.