Free (as in competitive) markets are indeed great, but capitalism is not free markets. It is, in fact, antithetical to them, since what capitalism really is about is a property rights system that allows for unlimited accumulation of capital (hence the name!), which inevitably leads to its aggregation in the hands of a few monopolists who then strangle said free market.
Free markets themselves, though, are a concept far older than capitalism, and are compatible with a broad variety of economic systems, including many forms of socialism and left-wing anarchism - e.g. Proudhon, the granddaddy of modern anarchist thought, was very much anti-capitalist and pro-free-market.
Free markets themselves, though, are a concept far older than capitalism, and are compatible with a broad variety of economic systems, including many forms of socialism and left-wing anarchism - e.g. Proudhon, the granddaddy of modern anarchist thought, was very much anti-capitalist and pro-free-market.
https://en.wikipedia.org/wiki/Left-libertarianism#Free-marke...