> On one hand, it would be very slow and very inefficient.
Why do you say that? Large, "boring" sectors of the economy would probably work just fine being algorithmically steered.
Anyways, more concretely: huge vertically integrated megacorporations behave much like centrally planned economies, and they seek to be doing just finem
Computing and software was researched and invented in a planned manner (NASA etc).
Maybe you can't "expand" and "generalize" software in a planned economy, if you want everything to be made with software. The article talks about about 80 competitors, so it can easily be said something should be planned.