It is just a matter of if they want to do it or not. Nvidia has a chip already that offers exactly what you discribed from a Supercharger Switch, in the Tegra X2. It would be quite easy for them to make a larger SOC for a bigger home only box, adding more CUDA cores, and increasing clock speeds, and using HBM or GDDR. Everything they need is available, it is just a matter of funding it, and putting it to the market.
Honestly this is the point every company is at. AMD, Intel, and Nvidia all have the tech to make a range of products, that spans Mobile, to High End Home Equipment. It is just a matter of companies deciding to put their money into it, and then consumers getting on board. At this point Sony, Microsoft, Nintendo, Apple, Amazon, Google, Samsung, and a few others could easily offer a range of Portables, Mobiles, Tablets, Laptops, Consoles, and PC's, that are all part of a unified ecosystem. It is just a matter of who does it best at this point. Within the next decade, you will be able to play your games on the ecosystem of your choice, via the device of your choice within said ecosystem. Purchase once, play anywhere.
As a gamer, I hope that either Sony, Microsoft, or Nintendo do it right first, and get a large share of the market. So I hope Nintendo does expand and succeed. The last thing I want is Google, Apple, or Samsung taking the rest of the gaming marketshare away from SNM, and seeing them destroy the gaming space like they have done with the mobile space.
Stop hate, let others live the life they were given. Everyone has their problems, and no one should have to feel ashamed for the way they were born. Be proud of who you are, encourage others to be proud of themselves. Learn, research, absorb everything around you. Nothing is meaningless, a purpose is placed on everything no matter how you perceive it. Discover how to love, and share that love with everything that you encounter. Help make existence a beautiful thing.
Kevyn B Grams
KBG29 on PSN&XBL