We have seen this story from Nintendo before so the cynic in me is hesitant to say that this is a resurgence that has any lasting power. The dual mobile/console functionality of the Switch seems to be almost as gimmicky as the motion controls of the Wii. The success of the Switch sales are largely built off two amazing games in Zelda and Mario while the Wii was built of the excellent of Wii Sports. It is also worth noting that those Switch games are single player compared with the multiplayer Wii Sports. It is therefore unlikely to have the same type of viral growth that the old console had when someone would have fun playing the game on a friend's system and immediately want to purchase one of their own. Meanwhile both Sony and Microsoft have released revamps of their consoles to increase their lead in performance compared with the Switch. That difference will only get worse as games start to target the newer hardware of those updated systems. I would want to give it another 6-12 months before declaring that Nintendo is truly back.