The public goods supply in our country is shifting from being controlled solely by the government to involving private and non-profit sectors as well. This change is happening to adapt to our diverse economy. In this new system, the government, private sectors, and non-profit sectors are both competing and working together to provide public goods. The best way to organize this system is to have a stable structure that can also adapt to changes, and to combine different sectors to achieve the most efficient and fair public goods supply.