““in times of peace and stability, democracies tended to accumulate ever-increasing numbers of interest groups. Instead of pursuing wealth-creating economic activities, these groups used the political system to extract benefits or rents for themselves. These rents were collectively unproductive and costly to the public as a whole. But the general public had a collective-action problem and could not organize as effectively as, for example, the banking industry or corn producers to protect their interests. The result was the steady diversion of energy to rent-seeking activities over time, a process that could be halted only by a large shock such as a war or a revolution.””
