This involves a pretty dangerous assumption, which is that the current methods of monetizing phones are the only ones that matter -- and it sounds as though you're trying to make an even more unpleasant assumption, which is that wealthy people are the only people that matter.

This is Hacker News -- a site for people who set out to build things that don't exist yet. the ability to target 68% of the world's smartphone-using population seems pretty interesting to me. For example, consider an education platform, as Nicholas Negroponte attempted to with the OLPC project. Whether there's monetization or not, there might be an interesting opportunity there.

Open your mind a little. Not everything is about the profit-making horserace.