You're examples are, pardon my language, spectacularly bad. Its important to differentiate genuine attempts at solving the problem of central planning v/s populist dreams of utopia. In fact Venezuela was much less central planning and more short term grabbing resources and making the available for free, without any consideration of planning or sustainability whatsoever. The Great Leap Forward was, again, a crazy Utopian plan where it was hoped that China would reach the goal of industrialization, again without any specific ways in which to achieve that.

The Soviet Union and East Germany seem to be the only states which attempted Central Planning genuinely, and from this article and other resources, it seems the problem was simply too complex even then... at that time.