+"Public Goods" are resources or services available to all, where one's use does not diminish another's, and exclusion is difficult. They are fundamentally [Non-rival](/wiki/non-rival) and [Non-excludable](/wiki/non-excludable), often posing challenges for private market provision due to the "free-rider problem."
+## See also
+- [Free Rider](/wiki/free_rider)
+- [Market Failure](/wiki/market_failure)
+- [Private Goods](/wiki/private_goods)
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