Now, this is not confirmed but after some thoughts... this is my theory, Switch is part of the Quality of Life idealism from Mr. Iwata. Switch is a gaming system, can be portable or home console right? but there's a sneaky idealism infiltrated by Iwata, Switch is about sharing... "sharing the joy" that's why there's so much emphasis on the multiplayer and social aspect of the console. But this time is not like the wii, this time is completely optional and not forced for their main games.
while I think about all of this, I also think this console was very personal for Mr. Iwata, he was sick and he knew that his life was in danger, so his point of view is different from a healthy person. Most of the time a very sick person wants to be happy and enJoy his final days sharing with people, and that was projected on his final idea.
