Rivalry in consumption: the degree to which one person consuming a good makes it more difficult for another person to fully consume the same unit of the good
Usage: A good generally exhibits high or low rivalry in consumption.
Examples: A fireworks display exhibits low rivalry in consumption. An ice cream cone exhibits high rivalry in consumption. (Alternate phrasing: An ice-cream cone exhibits rivalry in consumption.)
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Related terms: congestible goods (goods that go from low to high rivalry in consumption when they get crowded)