Anyone who wants a free-market completely devoid of government intervention has clearly never studied economics.

The most important book regarding capitalism is “The Wealth of Nations” by Adam Smith. It’s the first book any education on economics will ask you to read. It in, Smith states that the role of government should be 3 main points: defence, law and order, and public services. So the person regarded as the father of capitalism would consider NASA, firefighters and sewerage to all be government responsibilities.

The Wealth of Nations was written at a time when government intervention was the cause of monopolies, not a solution to it.

As the free market was embraced in different countries, economists saw it operating and built on Smiths work. Pigou wrote about “externalities” (such as pollution) where the person benefiting is not paying all the costs of production, and that this required government intervention to correct the imbalance this causes in the free market.