Switch is obviously going to win but what do you think?
Maybe superduper graphics power and 100GB installs will be what the market chooses. Personally I think portability and local multiplayer will win out. I also think most of the younger crowd will upgrade to a $250 game/media playing Switch over the latest $500 iPad.
The 'inevitable' destruction of mobile games at the hand of smartphones/tablets hasn't occurred. It's the opposite. Nintendo has shown that smartphone/tablets can be exploited to boost dedicated handheld games to heights never seen before.
I think Switch is going to be the laptop to the personal organiser (smartphone/tablet) and the desktop pc (Scorpio/PS5/PC).
Nov 2016 - NES outsells PS1 (JP)
Don't Play Stationary 4 ever. Switch!