Your definitions do not address the point of the comment to which you're replying. To restate, the point is that many markets tend to wind up as monopolies or

Your definitions do not address the point of the comment to which you're replying. To restate, the point is that many markets tend to wind up as monopolies or cartels. This turns out to be bad for the people making up society, and they (we) will not put up with it, so we pass laws against it. This is why we have and use the words "monopoly" and "cartel". And other terms like "price fixing", "bid rigging", "market failure", etc.