John Galt Said: "It is very difficult to control quality in a common market also. If you run a completely closed system, you will see the quality creep up every month as your product output is always higher quality than input, and your output becomes your supply in a closed system."
This is not true. High quality inputs to low process quality corporations will result in product that is lower quality than the inputs, sometime substantially. I'm still working out the exact formula, but I can provide numerous examples.