Communism :
Remember that laymen always prefer Communism. Smart people always prefer open markets. Open market by definition is where anyone is allowed to sell anything to anyone at any price they mutually agree.
In the time of our Prophet peace be upon him, feminine hit the city. People went to him and asked : Oh prophet! Everyone listens to you and whatever you say. Order businessmen to lower price of food items and fix the price, and if you tell them to do so, they will follow.
He declined. Replied. I wasn't sent to reduce your business profit.
There was no "demand-supply law" discovered or educated at that time. But he ﷺ knew the right thing regardless. And had far more wisdom than those smart educated we see in BD.