Do you have math to show this? I was struggling at end of my GPU day's to make more then electricity. I was better off and I parted all my GPU systems out.
I have one sitting doing nothing still I kept. It's a small unit compared to the 5 and 6x GPU machines I was using.
The continual development of new algorithms for GPU's seems to not let them die out. The concept of GPU mining seems to be a self perpetuating fantasy empowered by the GPU miners themselves.
If you live where electricity is cheap, eg. USA/China/etc then you may still be able to make a profit versus electricity cost but to turn a profit and pay for your investment is another matter. Most places around the world though it is simply impossible to make a profit. Another factor to consider is the time and effort setting up GPU systems and ensuring they are stable with the endless new algos. This takes a lot of time and time is money for most people. IMHO better to get a rock solid ASIC and mine with cheap electricity if it is available and see what comes of it.
Well from my calculations in the USA you can't swing it (esp if with new purchased gpu cards) at 12c usd kwh.....so I've no clue how anybody can do this and break even.