Mafia protection paradoxically increases the number of lemons sold.

Evidence

It might be thought that if mafiosi protect individuals effectively, the overall number of lemons sold in a society will be reduced. Despite the apparent paradox, however, the opposite is true. This can be shown in a variety of ways (discussed in Chapter 7), but the most general demonstration runs this way. A seller who does not live off only occasional customers and is concerned about his future income has a rational interest in behaving honestly and acquiring a good reputation (Dasgupta 1988; see also Axelrod 1984). Even if dishonest, he still has an interest in sacrificing short-term benefits for the sake of prospective gains. Fundamental to this argument is the assumption that a good standing in business is easily destroyed. The question is whether mafia protection alters this tendency toward self-enforcing honesty. — Diego Gambetta, The Sicilian Mafia The Business of…, 66

Categorization

Category: Contrarian or Surprising Claims

  • XREF: Direct counterpoint to the trusted-third-party welfare case in Milgrom et al.; private enforcement can raise adverse selection rather than solve it.
  • QUESTION: Does this lemon paradox depend on the seller having both protected and unprotected customers, or does it generalize?