We still got another year, and Pokemon Go looks like it could be the most profitable thing that might have ever happened to Nintendo. Basically this thread is a little premature.
Unfortunately, Nintendo itself will barely see any profits from the game. Most profits go to Apple, Google, Niantic and the Pokemon company.
Nintendo might not see that much profit from the app, but Nintendo has made the Pokemon Go Plus device, though, and that's already selling out. I'm sure they'll be able to get profit out of that, as they don't have to share it with others. With the popularity of the app, this is bound to sell well and contribute to the profits of Nintendo.