Institutional mechanisms for shared resources work only when the game can be made positive-sum

Land readjustment solves a coordination failure among landowners through shared benefit. River governance fails because there’s no enforcement and no reason for the upstream party to cooperate. Competition policy tries to solve coordination between efficiency and firm incentives through measurement. In each case, the mechanism works only when surplus can be genuinely shared — and breaks down when the situation is zero-sum or when winners can avoid compensating losers.

Explanandum

What distinguishes successful from failed institutional responses to shared resource problems? Is there a general principle?

Substance

The three Works in Progress articles each address coordination failures over shared resources, but with very different outcomes. Land readjustment succeeds (at scale in Japan) because replanning creates genuine value uplift that can be distributed — the pie grows. River governance fails because the upstream nation captures value at downstream expense — the pie is fixed or shrinking, and the upstream party has no incentive to share.

The key variable isn’t institutional cleverness but whether the underlying situation permits positive-sum outcomes. Land readjustment works at the urban fringe (where uplift is large relative to existing values) and fails in dense centres (where uplift is smaller relative to disruption costs). Desalination is appealing precisely because it promises to make the water game positive-sum — new supply rather than redistribution of existing supply.

When the game is genuinely zero-sum — when the road really does need to go through your house, when the upstream country really does want your water — the gap between Kaldor-Hicks and actual Pareto opens up, and institutional design can’t close it. The “third way” works until it doesn’t, and the question is how much of the problem space it actually covers.

This connects to the designed vs grown order tension: positive-sum mechanisms work with the grain of self-interest, while zero-sum interventions must work against it and therefore require coercion or compensation.

Supports

• Land readjustment’s success correlates with the size of achievable value uplift — it works where the pie grows most
• International river treaties succeed when both parties benefit (the Indus Waters Treaty lasted 65 years under conditions of mutual benefit) and fail when one party captures disproportionate value
• Competition policy works when it enables creative destruction (positive-sum over time) and fails when it merely redistributes between firms

Challenges

• Some zero-sum problems do get solved through institutions — property rights, contract law, courts — by establishing legitimate processes for resolving competing claims
• The positive-sum framing may be an ideological disposition (characteristic of Works in Progress) rather than an analytical tool
• Many real situations are mixed — partly positive-sum, partly zero-sum — and the boundary is hard to identify in advance

Open Questions

• Can institutional design reliably expand the positive-sum space, or does it merely operate within whatever space the underlying structure permits?
• Is the failure of river governance better explained by zero-sum structure (no shared surplus possible) or by institutional failure (shared surplus is possible but institutions are too weak to realise it)?
• Does cyclical institutional rebuilding help by periodically resetting the negotiation as conditions change?

Source Context

Emerged as the deepest connection between all three articles — the observation that coordination failures over shared resources are the common thread, with success determined by whether the game can be made positive-sum.