After Germany's WWII surrender, the Allied occupation set price controls on everything, artifically setting prices for goods. The result was that there was virtually nothing for sale in the legal market, and there was a thriving black market that used cigarettes and cognac as currency. The German installed as head of the German central bank got fed up with the situation and one day announced on the radio that the Allies had ordered all price controls lifted and merchants were free to set whatever prices they liked.
The generals were pissed and asked the banker who gave him the order to do that, the advisors were telling them this was a terrible idea. The German banker said "Yeah, all my advisors tell me the same thing." But the black market disappeared overnight and the goods that used to be hidden out of sight went up for sale in the market.
Moral of the story: LEAVE THE MARKET ALONE. The more authority or government tries to fiddle with it in order bring about some desired condition, the worse they make the situation. Leave it alone, it all works out (with a few exceptions).