Common good (economics)


In Economics common goods are a kind of good. Common goods have two properties:

  • It is not possible to prevent people from using them (called excludability)
  • A person making use of the good will reduce its amount.
Wild fish are an example of common goods. They are non-excludable, as it is impossible to prevent people from catching fish. They are, however, rivalrous, as the same fish cannot be caught more than once.

An example for a common good is wild fish.

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