Maybe the OP is right in every point he makes, and in a hundred years nobody is going to remember the name "Nintendo" (or maybe not I don't know), but what I know is that for many of us gamers, it matters that our first aproach to videogames, to high quality gaming entertainment came through Nintendo Systems.
So in my case I always tendo to lean towards Nintendo due to the good old memories and more recent ones.
PS. PLease excuse my lame english.
Gaming on:
PC:
Asus Z87-A | i7 4770K | MSI Radeon RX 480 Gaming X 8GB
G. Skill Ripjaws X Series 32 GB DDR3 2133 mhz | WD Blue 1TB SSD & WD Blue HDD 1TB
Consoles:
WiiU
Switch (Docked)
PS 3 / 4
Handhelds:
New 3ds XL
Switch (Portable Mode ;P )