dear, no one ever said America had a perfectly free market. In Econ 101 they teach that all economies are mixed. So, now do you have any idea what your point is?
Yeah my point is why are you promoting something that has never been in America and exists no place on Earth? Is this economic system you're trying to sell, sort of like the Utopia Marx promoted? If so that ain't gonna work either. Now about this mixture you say is the real thing, not your Marxist utopia, but a real economy, mixture of what?
Free markets have been and are in America. That they are imperfect does not mean they do not exist.
The Free market is a summary term for an array of exchanges that take place in society. Each exchange is undertaken as a voluntary agreement between two people or between groups of people represented by agents. These two individuals (or agents) exchange two economic goods, either tangible commodities or nontangible services. Thus, when I buy a newspaper from a news dealer for fifty cents, the news dealer and I exchange two commodities: I give up fifty cents, and the news dealer gives up the newspaper. Or if I work for a corporation, I exchange my labor services, in a mutually agreed way, for a monetary salary; here the corporation is represented by a manager (an agent) with the authority to hire.
Anything that interferes with that process makes the market less free, but it is still there. Nothing fantastical about it.