Institutional features that make the model work
›Revealed preference aggregated via prices and quantities
›Producer entry responds to unmet demand
›Consumer exit disciplines producers
›Heterogeneity supported by variety
Supporting cases
East Germany's Trabant production ran essentially unchanged designs for decades with multi-year waiting lists and no meaningful response to consumer preferences for quality, fuel efficiency, or safety. West German producers iterated continuously on consumer-observable attributes. Two populations with shared pre-war automotive heritage produced divergent industries.
Queues for routine consumer goods (meat, soap, shoes, stockings) were a persistent feature of Soviet life in a way that reflected allocation's inability to adjust supply to shifting preferences and to local demand variation. Glasnost-era disclosures made this explicit.
- Kornai, J. (1980). Economics of Shortage.
Administered prices below market-clearing levels for basic foods, personal care, and medicine produced persistent shortages, while parallel markets and cross-border smuggling supplied demand at market prices. The system could not respond to preference or demand shifts at the controlled prices.
The transition from Mao-era state retail to market allocation post-1978 produced a visible explosion of consumer variety across food, clothing, electronics, and services — the scale of the change indicates how much preference heterogeneity the prior system had suppressed.
Disconfirming cases
In healthcare, information asymmetries, insurance market failures, and adverse selection limit the applicability of pure consumer-sovereignty reasoning; this is a domain where markets work less well as preference-tracking mechanisms.
For credence goods (where quality is hard to assess even after consumption), consumer preferences are poorly informed and market discipline is weaker.
What this condition is NOT
- A claim that consumer preferences as revealed in markets are normatively authoritative (preferences can be shaped by advertising, addiction, adaptive expectations)
- A claim that consumers are fully rational or well-informed in domains with severe information asymmetry
- A claim that market provision is optimal in domains where preferences are myopic in ways that damage long-run welfare (health behaviours, addiction)
- A denial of any role for public provision or regulation in domains with externalities or public-good character
- A claim that consumer sovereignty should extend to domains where children, capacity-limited individuals, or third-party effects dominate
Policy implications
In domains characterised by heterogeneous, shifting, and observable-only-through-choice preferences, market allocation should be the default and administered alternatives require domain-specific justification (information asymmetry, externality, public-good character, intertemporal myopia). Price controls on broad categories of consumer goods reliably produce shortages and should be disfavoured; distributional aims are better served by income transfers.
Framework position
Conditional on baseline institutional quality and in domains without severe information asymmetries, market allocation tracks consumer preferences faster and more completely than administered alternatives. The framework narrows the claim to domains where the information structure makes consumer choice meaningful and does not extend it to domains (healthcare, addiction-prone products, credence goods) where the information structure breaks the argument.