As of today that is true. But once we hit 10nm node the progress in terms of cost per transistor will probably cease dramatically. And it already slowed conside

As of today that is true. But once we hit 10nm node the progress in terms of cost per transistor will probably cease dramatically. And it already slowed considerably. Compare for example nvidia 460 gtx (2010) and 2014 760 gtx (2014). For same $ you get roughly 40% more transistors. Cards cost $200 and tdp is 130W which gives $450 at $.1/kWh in 4 years. So once cards with 2 times more transistors hit the shelves you would already spend 5 times more on electricity than card itself.