Free market capitalism is a mechanism. To exist, it requires limited supply of money, free competintion, and free exchange(market). It works through the selection, whereby unsuccessful businesses die and successful businesses get they disproportional amount of money and thus can grow.Badly run and/or non-profitable businesses ultimately belly-up.
Unfortunately, such conditions hardly ever exist in the contemporary world. Therefore, businesses are not as efficient as they would be in the free market capitalism. Your cable company is not any more efficient than the government.