You cannot sell a console for more than $500. There is not a large enough market for it. Xbox One struggled out the gate to sell at $399... PS4 was more powerful and was being sold at the same price. A cutting-edge game console in manufactured in 2017 at $499 is exponentially more powerful/efficient/ advanced than the $399 consoles launched in 2013.
It'll have to be good enough for people. Otherwise wait until 2019 or 2020 for full console refreshes that don't need to worry about being backward-compatible with OG version PS4s/ Xbox Ones