IMO, the mobile market is eating Nintento alive, and will continue to do so. The console is uber-underpowered compared to the compe ion (and at $300 kinda overpriced) and over-powered compared to cellphones (for now). But cellphones are ubiquitous, games for them cost $1 or less. The whole portable thing went in another direction, and trying to recreate the GameBoy again is a losing fight.
I think they still have the 'toy' mentality, where they don't want to sell expensive hardware, and they want to try to cater to younger audiences, but look, the ugly truth is that the average gamer is 30+ years old, and there's more gamers over 36 than there are under 36. Most of the young kids play on their cellphones, which they already use to make calls, use social media, etc. They're not buying a Switch just because.
It'd be a shame if they go under too, we already pretty much lost Sega, tbh, and the days of Microsoft throwing stupid money around have been pretty much over since Ballmer left. Microsoft at least has Windows, they could try to screw Steam (or buy them up), but basically their next console or two have to be significantly better, or they gotta pull the plug.