What is one main principle of capitalism

Capitalism is a free market, meaning free enterprises. The owners of the market and economy would be private, rather than just openly to the state. I would say that the main principle would be that it is freely held.

Capitalism is the economic and social system and also the mode of production. In capitalism, means of production are predominantly privately owned and operated for profit and distribution, and exchange is in a mainly market economy. The rise of capitalism was supported by the ideas and theories of the many philosophers. One of the first was Adam Smith whose theory of "invisible hand" of market claimed that pursuing individual interests unintentionally produces good for society. David Ricardo developed the law of comparative advantages, which explain how trade can benefit all parties involved. John Lock argued that the right to have private property is the natural law.