web3/concepts/public-goods.md

Public Goods

Public goods are goods which anyone can use and benefit from, not just those who contribute to the creation and/or upkeep of the good.

• Public goods are non-excludable: anyone can use them.
• Public goods are non-rival: one person's consumption of the good does not diminish another person's consumption of it.

Rival	Non-Excludable	Excludable
Yes	Private goods	Common-Pool Resources
No	Club goods	Public Goods

Examples of public goods:

• National defence
• Open source software
• City parks
• Lighthouses
• Street lights

See Public Goods Problem