Concentration and price-cost margins have increased since the 1980s in many industries. These developments have raised concern about weakened competition and resulting harm to consumers and the need for tougher antitrust enforcement. In 1973 Harold Demsetz cautioned against inferring weakened...

Over the last century life expectancy has increased substantially and so has the share of health care expenditures financed by governments. In cross-country comparisons, the US, which has the lowest government health expenditure share, often has the poorest health outcomes. Is there a plausible...

Stigler’s theory of oligopoly remains a central pillar in merger policy in most, if not all, antitrust regimes around the world. Dennis Carlton & Sam Peltzman (Univ. of Chicago)