I don't see any proof of them not going to produce a console for a good while. Trust me in a year or two they are going to go full steam ahead on then new iteration. There are cycles in this industry that becomes apparent if you watch it.
Before i address this, i want to say that you're a sad sap for being a nintendo fanboy, who listed 2 superb games and 1 eh game as part of teh elite's "Triple A" library. Just to prove you wrong, here are some Triple A games that made their way to the PC, Xbox 360, and PS3, but not the Wii.
Batman: Arkham Asylum
Portal 1 and 2
Half Life 2 (and the subsequent episodes)
Any Halo game
Any (good) Call of Duty game (all of them not on Wii due to hardware necessities)
Any good Tom Clancy game (HAWX, GRAW, End War, Splinter Cell, Rainbow six)
Any GTA or Saint's Row
Any of the two current-gen Fallouts
Oblivion, and Skyrim will not make its way to Wii either
Any Gears of War
Killzone 2 or 3
INfamous
Borderlands
...to name a few...
anyway, I have noticed something in this new industry called "The Seventh Generation of Video Game Consoles", update-ability. Microsoft last year just had a massive reworking of Xbox Live's interface, to make it a more enjoyable, accessable, and reliable, online platform. Sony's Playstation Network (rest in peace) does the EXACT SAME THING. The wii lacked the hardware capabilities to be able to do this, justifying the need for a new Nintendo console. I do agree that Playstation 4 and Xbox 720 will make it out before 2015 though, anything later would be a bit redundant.