Essentially central planning is not about the efficient allocation of economic resources, it is about control.
Central planning maximizes the extent of control that the state, and the people running the state, exercise. The desire to control others is a constant in history and is part and parcel of the construction of states. If the state can grab all the land and resources and control who and on what terms people get access to them, then this maximizes control, even if it sacrifices economic efficiency.
Which is what gives us Kip\’s Law.
Kip’s Law: Every advocate of central planning always — always — envisions himself as the central planner.
For it is indeed about control *by me* of all those resources and people.