Idk if I can see Nintendo go the PC route anytime soon. I feel playing Nintendo games with their hardware feels natural for me as the games that are made by them are usually made with the hardware in mind. And its not just the power and specs, its the controller, the feel, the sound, etc. You couldn't do the SNES type of music on the Sega Genesis as indicated by AVGN comparing the two. You probably couldn't do the type of four player matches in Smash Bros. for the N64 on the PS (I may be wrong since I haven't played a 4-player multiplayer game on the PS). I'm sure Melee fans will attest to the feel of the Game Cube controller. And its the same on the handhelds.
I wouldn't rule anything out, but Nintendo is not in a tough spot as they used to be a few years back when they were suffering their first losses in decades (and for only about 3 years). Now, the Switch providing new ways to play, especially with its versatility, and the 3DS is still kicking with its latest and future titles in place.