Earlier quoted context omitted.
It's way more efficient than any other system that has been tried. Free markets bury command economies.
"Free markets" and "planned economies" don't encompass the breadth of possibilities of organisation of politics and economics. Case in point: TFA ... This post is precisely about a free market economy where the (imo unnatural) disconnect between working in an enterprise and owning the products of that enterprise doesn't exist. That's all. Not sure what "command economy" has to do with it.
If you hire a landscaper to redo the landscaping of your property, is he thereby entitled to own a share of your property? How about the guy you hired to fix your water heater? Does he get a share, too? Is that natural?