source: http://www.techinasia.com/nielsen-report-smartphone-adoption-gap-asia-pacific/
Considering the smartphone market, we're already in a phase where most people already have one, going by the current rate, we could see a 80% to 90% penetration in western & developed countries by 2017.
The average Game Price in the App Store is
0,75 $, that's literally nothing. And 30% goes to Apple, so it's actually
0,52 $ on average.
But as we know, the price deflation is the reason why mobile game companies spam the store with
F2P-titles and get the money back with
in-app-purchases. (just played Kingdom Rush, the heroes cost more than the whole game and you don't need them at all)
Actually, in-app-purchases account for the largest amount of revenues / income (
statistics from February 2013):
source: http://techcrunch.com/2013/03/28/in...f-u-s-iphone-app-revenue-90-in-asian-markets/
Going by
this report, games generate a huge chunk of the overall App Store revenue (even more on the Google Play store), depending on the country, it's 60% to 75% (average).
If Nintendo want's to earn big money with mobile games, they probably need to incorporate in-app-purchases and the question is how good this works with their franchises or how this is going to be percieved anyway.
We know that Apple payed out 13.000.000.000 $ to developers as of now. If 60% to 75% of this income was generated by games (see report), that's around 8.450.000.000 $ for games.
If we have 184.000 active games, then there're probably 50.000 to 100.000 developers. So the average income for all developers is 84.500 $ to 169.000 $.
Now you see what a hit and miss market this is when some companies earn millions and millions but the average is 84.500 $ for >7 years.
The thing is, Nintendo should still be one of those companies earning millions and millions, but even EA can't generate their biggest income on mobile devices (despite growing) with FIFA, Madden, Simpsons and whatever games they have on the store (+ Google Play Store).
On the other hand, you have to consider that global smartphone market should reach 50% in 2017, so there's still potential, but what should they do in western markets that already hit nearly 100%?
So, there are a lot of things to consider, I don't think that Mario on Smartphone = Instant Money or even more or better or secure money than their current strategy <- They need a better strategy anyway.