Why societies need public goods

The most distinctive features of public goods are usually understood to be the difficulty of excluding potential beneficiaries and the fact that one appropriators benefits do not diminish the amount of benefits left for others. Yet, because of these properties (non-excludability and non-rivalry), public goods cause market failures and contribute to problems of collective action. This article aims to portray public goods in a different light. Following a recent reassessment of public goods in political philosophy, this contribution argues that public goods are particularly suitable for sustaining a well-ordered society. Public goods contribute to social inclusion, they support the generation of the public, and they strengthen a shared sense of citizenship. This article scrutinizes these functions of public goods and offers a discussion of the interventionist thesis which states that governments should sustain public goods.