A centrally controlled economy will fail, so will a free market one. The problem with the first is self evident, at one point or the other the market is too big and too complex to effectivly manage, the second one is counter intuitive for the Capitalist / Free Market crowd.
So let's talk about the second one for a bit. Free Markets (if we would reset the clock, tear down all borders, currency issues etc.) will in the end fail because the assumption that "Greed" will keep the system (somewhat) in balance simply is lacking the understanding that not everybody has the same level of Greed.
There is a reason why there are only a handful of multi nationals, simply they have reached "critical mass" at one point in time and are now a "run away" train. The logic that in an "open market" anybody could compete with these behemoths is wishful thinking. The amount of monetary outlay to compete with the likes of Kraft etc. just makes it prohibitive for any new player to enter the field. Case in point would have been the breakup of AT&T into the "baby bells" by the US Government in order to allow competition in the phone market.
I also think it is a myth that competition (between many players) is a gurantee for innovation. Just take a look at the IT field to see what I mean. A lot of potential was there, but then the PC was "good enough" and swept the market, not only has innovation slowed down to a crawl, but there has been no new entrance into the market, because Microsoft with Windows has such a large pie that what exists as competition (from a market percentage) is a joke (and yes, I am typing this on a Mac).
Finally, even though centralization is not the answer, there ARE certain areas where centralization IS essential. Case in point would be the public transit. Britain's deregulation has caused havoc in it. A public transit system needs to be "in sync" with each other to make it useful. To run four or five different buses next to each other trying to compete for customers is inefficent not to mention breaks the entire "integration".
So, should the Government be more involved? It depends. I think certain basic serivces, where competition makes little sense (e.g. power (owned by the cities), water (owned by the cities) public transit (owned by the cities) makes perfect sense. It also makes sense for the Government to impose rules and regualtions and then enforce them with fines and punishment that actually DO hurt (e.g. the way they handle drunk driving in sweden, instead of fixed sums they give you a ticked worth x% of your anual salary). The rule of the Government is and should be to provide the basics for people to do business and live in peace, outside of that there is no role.
As a note: Yes, this is very much simplified.... I shall try to clarify certian points should the need arise








