Sony's days are numbered due to this simple fact.
Nintendo can stay 'below' Sony and succeed but Sony can't 'out Nintendo' Nintendo.
It doesn't matter what's possible in the future, this simple fact leads to Nintendo winning eventually. Nintendo can do a VR, a PS4 level, PS4 Pro level, XB1X level home console without concern. They might only sell 10M but it doesn't matter. Nintendo has an impenetrable wall around them that Sony can't counter meanwhile Sony is open to attack from Microsoft, Nintendo, PC gaming or a totally new competitor.
Sony CANT counter Nintendo but Nintendo has all the time in the world to go against Sony.
Japan is where the battle will be fought and when Nintendo wins, Sony will only be able to compete on price and 3rd parties.
When Nintendo overcomes this, Sony's dead.
(To Mods: If you're going to let 'Nintendo is still doomed threads' pass then this thread shouldn't be a problem unless reality is hard to accept).
Don't Play Stationary 4 ever. Switch!