The Switch is just a culmination of Nintendo's efforts over the years to fold their home console business into portables ...
Nintendo realized over the past generations realized that home systems aren't viable for them anymore because they aren't all that competitive without the virtue needing a portable design form factor so all of their home console franchises are being converted as anyone would guess it into handheld franchises like Animal Crossing, Metroid Prime, 3D Mario, Splatoon, and their JPRGs ...
Do you see a relationship of how all of those series originated on Nintendo's home systems with them now being exclusively developed on their handhelds ?
If they had been more successful with home systems, maybe it wouldn't have been inevitable ?
