No offense, man, but I think many of your posts are optimism without substance. Really, what you suggested here is nigh on impossible. You cannot simply put in desktop parts into a console without any modifications. A good gaming PC can draw over 300W at peak, the strongest ones easily over 400W if need be. A console will probably draw 220W at most. If I recall, a desktop Zen CPU requires 90W alone, and that's taking into account GPU, RAM and other components. The GPU is the component that draws the highest wattage, so if they straight up fit in a 90W CPU, you can forget about a good GPU, what more a 6TFlops one. There is a reason Jaguar was chosen despite being very weak.If semi custom not ready for 2017, Scorpio can use none custom desktop/laptop Zen CPU.
Edit: And I haven't even brought up die sizes. Many in this thread think it's as simple as price, power and competition.