I think people are going to be surprised as to the company Nintendo is in 5-6 years. It won't be DS4 + Wii 3 and business as usual, there are going to be some dramatic shifts coming I think. They are going to branch out and gaming is going to become just one of the things they do, and it will be one unified platform (no separation between console/handheld/etc. you play the same games on both).
Honestly video games aren't that great of a business, almost no one is consistently making big money in this industry, not any of the three console makers, and even the big third parties are up and down and all over the place with their finances.
The huge problem that presents to Nintendo and Iwata touched on their in the Q&A is Nintendo doesn't have other divisions like Sony/MS to weather changing industry conditions in the game business. If things are going bad, then there's really no recourse for Nintendo.
Sony kinda hogs the console market, and consoles only really sell great in North America + Europe now, two areas in which Nintendo has very little credibility with core gamers anymore. They can't compete there. So there's 3DS, but that market is declining every year, shockingly dropping to pre-1998 (prior to Pokemon launch in the US!) levels. The erosion of the casual/kids market to cheaper/pick-up-and-play iOS/Android gaming continues unabated, that is creating a 1-2 combo that's left Nitnendo with only a core fanbase to sell to and they can't sustain their business off just 20 million loyalists.
