It is what kind of capitalism we should embrace, where the boundaries of the market-place should lie, how and by whom markets should be regulated, and in whose interests. Behind these questions loom more fundamental ones. For now that we have emerged, eyes blinking, into the post-cold war daylight, we can see that capitalist market economies are not all of a piece. No doubt, they all spring from the same fundamental propensity to 'truck, barter and exchange', which Adam Smith thought intrinsic to human nature. But, like all the great universalist simplifiers, from Plato to Marx to Hayek, Smith obscured as much as he illuminated.
Sexual desire is also intrinsic to human nature.
So is the fear of death. Yet different societies regulate sexual behaviour, and cope with death, in widely differing ways. So it is with the market. Markets are social constructs, embedded in societies, shaped by societies and sustained by societies. The unregulated free market which has been the holy grail of British government for fifteen years is a chimera.