Creative destruction, as in the Austrian school, should be a major factor.

Think evolution of organizations, economically inefficient ones die. People learn (in the Lamarckian way, too) what works best at the present time.

Also...

To quote an argument from your blog, there are many tens of millions of people needed to keep our civilization working efficiently (some specialized jobs might only have a few dozen practitioners, according to you).

And to keep up with research and new methods, in every decade a large percentage of all those jobs will be totally different.

Centrally planned system just can't touch that -- they can't even avoid traffic jams with a few million cars! (And those cars aren't [yet] genetically and culturally programmed to optimize their behavior individually and in groups.. and change a lot culturally every generation.)

Own petard, etc. :-)

Edit: A bit clearer, hopefully. Non-native language.