353 | Alvin Roth on the Economics of Morally Contested Markets
What this covers
Alvin Roth and Sean Carroll discuss how societies should reason about morally contested markets—those involving kidneys, plasma, surrogacy, drugs, and aid in dying—where some people want to transact while others object on moral grounds. Roth's central claim is that neither blanket bans nor blanket freedom resolves these tensions; instead, each case requires careful design, attention to consequences, and willingness to experiment. The conversation moves between economic principle and real-world policy, examining how markets and bans alike depend on social support to function. A ban on hiring contract killers succeeds because society actively resists it; a ban on drugs fails because it lacks equivalent social buy-in, despite nearly identical legal severity.
Roth distinguishes between commodity markets, where standardized goods let traders deal anonymously, and matching markets, where relationships and compatibility matter. He shows how the presence of money can transform a transaction's moral standing even when the underlying act remains unchanged—adoption is widely accepted, but paying a birth mother is illegal almost everywhere under the Hague Convention, while surrogacy arrangements vary dramatically by jurisdiction, generating fertility tourism. The discussion covers kidney exchange and plasma donation as cases where legal prohibition creates real harms: hundreds of thousands die on dialysis waiting lists, while plasma facilities in the US prevent shortages that leave hemophiliacs and immunocompromised patients vulnerable worldwide. Roth argues that moral reasoning often sidesteps the trade-offs economists analyze, favoring purity of intention over empirical consequences. He defends experimentation—from modest kidney-donor incentives to drug treatment models—as necessary when pure reasoning cannot settle which policy configurations minimize overall suffering. Throughout, he emphasizes that markets are designed human artifacts, not self-arising phenomena, and that their success depends on getting the institutional details and social expectations right.
Roth argues that markets are designed human institutions for aggregating information, and that morally contested markets (kidneys, plasma, surrogacy, drugs, aid in dying) cannot be resolved by blanket bans or blanket freedom but require case-by-case design, attention to trade-offs and consequences, and experimentation—because both markets and bans on markets need social support to actually work.
- Markets are artifacts that aggregate private information into collective action, not magical self-arising things
- Bans only succeed where they have social support (hitmen) and fail where they don't (drugs), regardless of identical laws
- Moral arguments often ignore the trade-offs and consequences that economists analyze, e.g. banning kidney sales while millions die
Complex trade-off questions about contested markets require empirical testing and consequentialist evaluation, not pure philosophical reasoning.
- Some questions about contested markets are too complex to resolve purely by thinking; we must experiment, gather evidence on what works, and judge policies by their consequences rather than intentions—as with drug treatment models or modest kidney-donor incentives—because pure reasoning cannot settle which trade-offs produce the best outcomes.
“there's some questions that are complicated enough that we can't just think our way into the answer. We have to experiment and see what works and try that.”
Objections to contested markets rest on three distinct ethical grounds: intrinsic wrongness, exploitation risk, and commodification concerns.
- Objections to morally contested markets fall into at least three distinct types: that the thing traded is intrinsically ethically wrong (e.g. killing), that the market would be exploitative of the sellers, and that it commoditizes people in a way we reject even if everyone is made better off—with the third sounding most like mere paternalism.
“the third is this idea of commoditizing people. Like, even if everyone's better off, we don't want it to happen anyway because people shouldn't be treated like commodities. That third one sounds a little bit less defensible. It sounds more like just being paternalistic.”