True, except that we don't built airplanes by ignoring the fundamentals of gravity or its sheer existence. Bureaucrats and politicians abound who can't grasp supply and demand, and have no accountability when reality causes their plans to crash.
no, you can't. everywhere people trade, there's a market. all you can do is raise the costs associated with legal markets, and deprive those engaging in trade of the rule of law.
take a look at the drug cartels for what happens when you try and legislate markets totally out of existence.