Why do people dispute the free market economy. If they believe that the free market economy is manipulated by tricky and dishonest businessmen. Is it equally possible that a planned economy is manipulated by tricky and ignorant politicians? To mistrust the free market economy is to mistrust people, the mankind.
Liberalism is built on trust. There are people who are dishonest and even criminal. Liberalism have the Rule of Law to deal with that. There are businessmen who seek profit. In fact we all do. The best way to handle unreasonable profits is just the free market and the competition. Just have look around you and see so many businesses working to our common good.
Liberty, equality and fraternity is the slogan of liberalism. Also the socialists use it. Why cannot they then accept the free market economy?