I think that any large business is already too large for the top to micromanage things. No human has enough time and free computing power in their head to do that. That's why I believe central planning run by humans is unworkable - we're too slow to handle the complexity.

But then again, successful micromanagement happens - it's usually called "strong leadership", "CEO with vision", etc. Apple with Jobs and Amazon with Bezos come to mind as past examples (not sure how Amazon is doing now, but there was a lot of praise written for Jeff's micromanagement), and the most visible current one would be Tesla and SpaceX under Elon Musk.