There can never be such a thing as a free market, because it is human nature to cheat, monopolize, and buy off others so as to corner the market.

English majors understand human nature better than economists do.

The ‘share’ of his company is like a human nature, as soon as one thinks that it cannot go further down, it finds new bottom.

Is human nature basically good or evil? No economist can embark upon his profession without considering this question, and yet they all seem to. And they all seem to think human nature is basically good, or they wouldn't be surprised by the effects of deregulation.

There is no free market for oil.

There is no free market for oil. It's controlled by a cartel, OPEC.