State planning ?
Don't think they can get the power to prevent people from trading. Specially not with Internet and Bitcoin in place.
By the way, I am a programmer and if comes a day with jobless people come to me with pitchfork and taxes, I'll get out along with my only tool, my head, making money elsewhere. (And storing my money in Bitcoin so they can't seize)
Or maybe I'll just close myself in a bunker, hoping they don't cut off my internet connection... (I'm already used to that

)
Karl Marx mentioned this in his communist manifesto. The people who control production will eventually owned everything.
What is the difference between a company that owns everything and a government that does so ? Nothing from my point of view as long as my freedom is concerned, none is more legit than the other.
The difference is maybe that the government will turn my citizen against each other by using denouncement and laws.
As the concentration of power in the hand of few is not proved in a free market (quote me one company that ever got enough capital for mass scale coercion), it has been already been proved in democratic (and non democratic) government.