"[W]ad of cash" is certainly over stating it. I think it costs more to put out a game, even with minimal localization, than most people realize.
Also, the only way ANYone is buying a Wii just for Zelda had to first decide that playing Twilight Princess on Wii wasn't worth it because they already had a Gamecube AND (and this is a strong and) literally did not care for anything else the Wii had to offer. That means no NMH/2, SMG/2, DKCR, Kirby's Epic Yarn, S&P2, SSBB, Kirby's Return to Dreamland, Mario Kart, NSMBWii, Disney Epic Mickey, Tales of Symphonia 2, Metroid Prime Trilogy, Wii Ware, Virtual Console, et-fucking-cetera. AND also they wouldn't just wait until the Wii U came out so they could just play it on that.
It's kind of a stretch, is what I'm saying.