Any planned economy is inherently built upon a bias and ideology that is culturally specific to the creators of it. There is no way that the US will accept a planned economy ran by China, or by India. However these countries followed by Africa will be the most populated areas of the world, so some would argue they should have more to say about this planned economy.

Meanwhile capitalism bases itself on game-theory and evolutionary selection. You compete with power, sexual selection and resources. It's sadly a system more aligned with the natural order of things. If you strip away all banks, hedge funds, etc, you are again going to get people who want to mate with the hottest fit partner, get the most resources to ensure survival of their offspring, etc.

The organizational/political problem I mention above with the land use land in the same bucket. Who gets the best land, etc. Historically this has just been decided by war and killing each other. Maybe you're right and that's where we end up, but that is very far from the utopias talked about in the comments above.