Freedom granted only when it is known beforehand that its effects will be beneficial is not freedom. - Friedrich Hayek

I think the basic misconception is to speak of the so-called “best” allocation of resources. What is the best? In common economics it is defined as what would be if we knew everything. Economists operate with the fictitious assumption that all the relevant data is known, but this is totally unrealistic. Nobody knows all the data. What we have is widely dispersed knowledge, which cannot be concentrated in one mind. To call the situation—which would use all the knowledge available—“optimal” is nonsense because it is by definition a non-achievable solution. Our problem is not the full utilization of all knowledge but the best use we can achieve with any known institutional structure. In that sense, some oligopolistic (and even monopolistic situations), represent the best possible utilization of knowledge that we can achieve. Even the action of a monopolist can be extremely beneficial.

These morals, or better this moral tradition, is the result of an evolution which occurred parallel to, and yet distinct from both biological evolution on the one hand, and the evolution of our intellect on the other hand.

The knowledge of facts is widely dispersed. We want to make use of knowledge possessed by millions of individual people, which they can only use if they are fed signals about the general situation. You can't reverse it you can't possibly concentrate this knowledge. The whole order of international cooperation has been built on such a signalling system, where signals tell you about facts which nobody knows concrete in their totality, and I may add such signals you cannot correct - you can not correct signals which inform you about circumstances you don't know.