Economists often ignore politics when analyzing policy issues or view politics as a problem to overcome rather than as fundamental. When evaluating a carbon tax, for example, I try to tote up its potential environmental benefits, its hit to consumers and producers, what happens to the revenues, etc. I might also ponder what policy tweaks could facilitate a political coalition willing to enact such a tax. But I don’t typically worry about how a carbon tax would change the balance of power among coal, oil, nuclear, natural gas, and nuclear interests or between energy consumers and producers.
In the latest Journal of Economic Perspectives, Daron Acemoglu and James Robinson argue that this approach is short sighted, sometimes dangerously so. They argue that economic policy analysts should evaluate how policy decisions might change the future balance of political power and, thereby, the efficiency and fairness of future economic decisions:
There is a broad—even if not always explicitly articulated—consensus amongst economists that, if possible, public policy should always seek ways of reducing or removing market failures and policy distortions. In this essay, we have argued that this conclusion is often incorrect because it ignores politics. In fact, the extant political equilibrium may crucially depend on the presence of the market failure. Economic reforms implemented without an understanding of their political consequences, rather than promoting economic efficiency, can significantly reduce it.
Our argument is related to but different from the classical second-best caveat of Lancaster and Lipsey (1956) for two reasons. First, it is not the interaction of several market failures but the implications of current policy reforms on future political equilibria that are at the heart of our argument. Second, though much work still remains to be done in clarifying the linkages between economic policies and future political equilibria, our approach does not simply point out that any economic reform might adversely affect future political equilibria. Rather, building on basic political economy insights, it highlights that one should be particularly careful about the political impacts of economic reforms that change the distribution of income or rents in society in a direction benefiting already powerful groups. In such cases, well-intentioned economic policies might tilt the balance of political power even further in favor of dominant groups, creating significant adverse consequences for future political equilibria.
Our argument is that economic policy should not just focus on removing market failures and correcting distortions but, particularly when it will affect the distribution of income and rents in society in a direction that further strengthens already dominant groups, its implications for future political equilibria should be factored in. It thus calls for a different framework, explicitly based in political economy, for the analysis of economic policy. Much of the conceptual, theoretical, and empirical foundations of such a framework remain areas for future work.
They offer several examples, including the allocation of natural resource rights (an Australian approach promoted democracy, while one in Sierra Leone did not) and financial and banking regulation / deregulation in the United States.