Public Goods, Stag Hunt
The Supply Chain Gamble
The Supply Chain Gamble is a Public Goods and Stag Hunt scenario. The core lesson: Everyone wants a secure supply chain. Nobody wants to be the one who paid to build it. Several manufacturers depend on the same critical minerals for clean energy hardware, all sourced from a few concentrated suppliers. Building alternative supply and processing would reduce the shared risk of a shock, but it is expensive, and any firm that invests creates a cushion that its rivals enjoy for free. DecisionPlay maps the players, payoffs, and equilibrium dynamics that shape how this situation typically resolves.
The situation
Several manufacturers depend on the same critical minerals for clean energy hardware, all sourced from a few concentrated suppliers. Building alternative supply and processing would reduce the shared risk of a shock, but it is expensive, and any firm that invests creates a cushion that its rivals enjoy for free. So each waits for someone else to move, the redundancy never gets built, and the whole industry stays one disruption away from a crisis. You run strategy for one of the manufacturers as a supply scare hits the news.
Background
Supply chain resilience is a public good: costly to provide, and once it exists everyone benefits whether they paid or not. That structure invites free riding. Each firm reasons that it would rather have a rival carry the investment, so all of them underinvest, and the collectively rational buffer never appears. The shock that follows is the bill for the coordination that did not happen.
What this reveals
Nobody funds a public good alone
Supply security helps everyone once it exists, which is exactly why each firm would rather a rival pay for it. Individually rational free riding produces a collectively irrational outcome: a fragile chain that a single shock can break. The market underprovides the very resilience it needs.
How to counter it: Convert the public good into a club with members and dues, take the credible first step that lets others follow, and turn one-off buying into long term pacts. Cooperation on shared risk does not emerge on its own, it has to be built with structure and a first mover willing to go.
A question to sit with
When did something everyone needed go unbuilt because each person assumed someone else would pay for it?
Frequently asked questions
- What game theory concept does The Supply Chain Gamble illustrate?
- The Supply Chain Gamble illustrates Public Goods, Stag Hunt. Everyone wants a secure supply chain. Nobody wants to be the one who paid to build it.
- What is the situation in The Supply Chain Gamble?
- Several manufacturers depend on the same critical minerals for clean energy hardware, all sourced from a few concentrated suppliers. Building alternative supply and processing would reduce the shared risk of a shock, but it is expensive, and any firm that invests creates a cushion that its rivals enjoy for free. So each waits for someone else to move, the redundancy never gets built, and the whole industry stays one disruption away from a crisis.
- What does The Supply Chain Gamble reveal about how people decide?
- Nobody funds a public good alone. Supply security helps everyone once it exists, which is exactly why each firm would rather a rival pay for it. Individually rational free riding produces a collectively irrational outcome: a fragile chain that a single shock can break. The market underprovides the very resilience it needs.
- How do you avoid the trap in The Supply Chain Gamble?
- Convert the public good into a club with members and dues, take the credible first step that lets others follow, and turn one-off buying into long term pacts. Cooperation on shared risk does not emerge on its own, it has to be built with structure and a first mover willing to go.
- What is the research behind The Supply Chain Gamble?
- Supply chain resilience is a public good: costly to provide, and once it exists everyone benefits whether they paid or not. That structure invites free riding. Each firm reasons that it would rather have a rival carry the investment, so all of them underinvest, and the collectively rational buffer never appears.
- How long does The Supply Chain Gamble take to play?
- About 10 min, at advanced difficulty, across 3 decision points. It runs in your browser with no account and no sign-in.
Keep exploring
More Sustainable Energy scenarios, or browse all scenarios. New to this? Start with how DecisionPlay works or the game theory glossary.
Topics: sustainable-energy, critical-minerals, supply-chain