Even the 3DS still is not selling very well here (sub 130k this year, perhaps down again year over year) even with Luigi's Mansion 2 and other solid releases and a much deeper library overall.
Wii U is notably a disaster.
Nintendo has lost the support of the biggest Western publisher in EA. Not even the N64 or GameCube did that.
They have really no big Western studio IPs, they have Retro/Next Level/Monster Games, but basically all these studios are allowed to work on are Japanese Nintendo I.P. that the main EAD group is too busy to work on themselves.
Does the fact that Nintendo really has invested nothing into Western IPs alienated them from the Western market after the Wii Sports/Fit/Brain Training crazes wore off?
Even in the 90s and early 2000s we'd see things like Killer Instinct, GoldenEye, Star Wars: Rogue Squadron I-III, NBA Courtside, Banjo-Kazooie, Eternal Darkness, Excitebike 64, etc. from the Western studios.
Can Nintendo continue as a major player in the Western market just relying on Japanese IP?