The genius of the free market is that is replicates the most
powerful earthly force—evolution—in the realm of material development.
We try new stuff all the time, some variations thrive, and some
variations die. Things adapt to their environment—an environment
composed of human desire—through millions of tiny, iterative changes. As
with the case of biological evolution, those changes are inherently
unpredictable.
Kevin D Williamson makes an important point about the free market (thanks to
Instapundit):
Those of us who favor market-based solutions to social problems
don’t do so simply because we don’t like government or the sort of
people who go into government, or don’t like to pay taxes, or because we
want to create profit opportunities, or because we are on some sort of
Taylorist quest for efficiency, whatever “efficiency” means in the
current context. What really matters is that in the free market things
get better: Where there is capitalism, ordinary people are with each
passing year better fed, better clothed, better housed, better doctored,
better entertained, and better employed. Better and cheaper and cheaper
and better — except where politics inserts its big ugly snout.