Nintendo being the third wheel of the Microsoft Sony console style doesn't work and never will. The market isn't large enough to support 3 makers in the same lane.you're not listening
even if every 3rd party dev wanted to devlope for the switch... they COULDNT DUE TO THE HARDWARE NOT BEING CAPABLE.
And what you're saying is false because 3rd parties could develop for the switch just as Nintendo develops for it. They would just have to build experiences to target that hardware which would be worth it if Nintendo could show proof that their audience will buy that stuff.