 The main ones that exist today are mixed economies, where the state intervenes in market activity and provides some services; laissez faire, where the state only supplies a court, a military, and police; and state capitalism, where the state engages in commercial business activity itself.Laissez-faire, or free market capitalism, is an ideology that prescribes minimal public enterprise and government regulation in a capitalist economy.This ideology advocates for a type of capitalism based on open competition to determine the price, production and consumption of goods through the invisible hand of supply and demand reaching efficient market equilibrium.