Question

Why do we have markets and, according to economists, what roles should government play in them?

Answer 1

A market economy is a system in which the supply and demand for goods and services plays a primary role in a competitive marketplace. The government may also ensure national security by not allowing businesses to transact with enemy countries and providing services that are not typically handled by private business.

Answer 2

Four Main Functions of Government in a Market Economy: However, according to Samuelson and other modern economists, governments have four main functions in a market economy — to increase efficiency, to provide infrastructure, to promote equity, and to foster macroeconomic stability and growth.