I don't agree entirely. The buying/selling/trading of goods is a process that doesn't automatically require any written laws or governments, only a social contract between individuals. The reason that laws and governments exist is because of the human propensity towards greed, dishonesty, theft, and violence.
It's not that a system is "put into place," but it's more a matter of the complexities and inherent malice involved in human interactions which leads to the necessity of putting restrictions upon that system. That's where the trial and error comes into play, since they've had to try different ideas out from time to time. Sometimes they work, and sometimes not. The Federal Reserve Bank, for example, was created to manage the money system. The IRS was also created around the same time. Various anti-trust acts and labor reforms came about as well.
So, this proves, at the very least, there's a certain flexibility in the system which can make changes and reforms which might have certain socialistic characteristics, but wouldn't automatically "become socialist."