Page "Free rider problem" Paragraph 7

One of the few cases in which neoclassical economists support government provision of goods or intervention in markets, markets for public goods, which may attract free rider problems, will not come to rest at the appropriate equilibrium when left to the invisible hand alone.

For example, most governments supply national defense, police forces, and disaster aid which might be vastly under-produced by the private sector.

There is some disagreement among economists about which outcomes should not be left to market forces alone, however most would list national defense as a good best produced and distributed by governments.