Yes
If the hybrid Switch can get down to ~$150 and MK9, NNSMB2, Smash, AC, Pokemon, Switch Sports 2, Ring Fit Adventure 2 and more are all cross gen releases then 150m+ is guaranteed assuming no credible handheld or Wii-esque competition comes along, which it won't.
If Gameboy can last as long as it did with ancient tech while Switch launches with a game that the open world masters developing for PC/PS4/XB1 couldn't achieve then there's no reason it couldn't be around for 10-15 years.
The graphics gap is smaller than ever and the gameplay gap is negligible. No-one's talking about smartphones dooming Nintendo's handhelds anymore so it must have become obvious to everyone that the only competition the HH-Switch has is the hybrid.
Nov 2016 - NES outsells PS1 (JP)
Don't Play Stationary 4 ever. Switch!
