(Reorganized sequence of points for clarity)
Government planners are also agents of those who own the property in a democratic system.
Well, in a centrally planned economy there is no "non-governmental economy" but this is all a nice little sidetrack from the fact that the central planning boogeyman you keep harping on is the planning method used by corporations in the vast majority of cases.
There is nothing inherently bad about central planning. ...I also know it is the preferred planning method of the businesses involved in the free market.
http://economicsociology.org/2014/11/13/corporate-central-planning-and-american-industrialization/
Your insistence on a flawed understanding of the historical meaning of "central planning" is a red herring. It is no wonder that the blurb in your link notes: "Richard Adelstein’s use of the word “planning” to describe corporate management will seem jarring to some." It is "jarring" because Adelstein is focusing on a different meaning. He focuses on the process of managerial planning in corporations, RATHER than in the historical sense of just what kind of activity is being planned. For our thread purposes, its a canard. OF COURSE, taken literally, some kind of centrality in planning is used by ALL businesses and persons; in fact, regardless of size, all firms (from single owner barter proprietors to fortune 500) plan for their own business operations, as determined by its assigned decision maker(s). All businesses of all sizes 'centrally' plan for likely consumer demand then plan and manage their own production, logistics, marketing, pricing, and distribution - be it directly or through sub-contracting. How could it be otherwise?
But the difference is in the mainly consensual multitude of transactions of 18,000,000 of US businesses and firms (regardless of their chosen form of legal organization) and the 114,000,000 consuming households are in a market relationship without a "central planning" for outcome by these participants; the other 40 percent of the economy is in subordinate to the non-market leviathan of the federal government whose central planners tell producers and consumers what must result from their spontaneous ordering.
So no, they don't do the same thing. The general contemporary meaning is not in dispute:
"The guidance of the economy by direct government control over a large portion of economic activity, as contrasted with allowing markets to serve this purpose."
Read more:
http://www.investorwords.com/17515/central_planning.html#ixzz3kcR6dBSJ
So the issue between the quasi-socialist policy makers and those of us who oppose their bromides is not over foresight and preparation (planning), it is over whether the monopolist of force and coercive power should merely set the neutral rules of the market so each of the 10,000,000s of millions of participants can each plan and direct their own resources and operations spontaneously OR whether a "central planner" is going to issue decrees and directives telling businesses and households what they what they must produce and/or consume.
Central planning, in the usual sense, is an inherently bad idea.