So what's the draw to a smartphone platform without apps?
If their market share reaches such a steep difference, developers *will* abandon IOS as a platform. Apple is repeating the same mistakes that previously forced the into obscurity.
Reaches a steep difference? Scroll up and look at that normalized market share graph. iOS has oscillated between 10% and 20% of market share for the past four years. It's "always" been the minority player in this market, albeit a well-positioned one. And developers have flocked to it.
So long as Apple can maintain a stable of a hundred million plus users who are willing to actually pay for apps, they will be well supported by the dev community.