You really think there's a chance that not only will the NX launch after only four years (sort of almost plausible) but then its successor will launch only three years after that? I don't think that's realistic in the slightest. That's a complete console overload, and that's coming after the Wii U's failure to stick. On top of it all consider how it can take years before Nintendo's able to develop enough games for their systems to make them more appealing.