I suppose "no motion control" could be translated as "Nintendo does nothing disruptive and continues their Gamecube practices" in which case they would continue being stuck in third place with most of the third-party publishers, journalists, and gamers still treating them as irrelevant relics of the past. Eventually, they would likely either withdraw from the gaming business or become a small-time third-party publisher.
Now that may sound like a dream come true for some fanboys, but that would have some pretty serious effects on gaming. Namely, Microsoft and Sony probably would still continue apealing largely to the gamer crowd that already existed and not even bother with attracting a new audience. That would lead to some serious problems in the future, with gaming becoming a mutually exclusive affair and begin slowly collapsing in on itself.
