Perhaps the market will change to be more like the console market, where the hardware is sold at a loss in exchange for future revenue from other sources. I would look for phone manufacturers to start asking for a percentage of app sales.
They want it, but they're not going to get it. In any case, for the time being, app store revenue is minimal compared to device revenue; last year the whole sector took under 2 billion dollars in sales globally, only a third (less sales taxes etc. in some cases) goes to the operator.
