Have you noticed how most new mobile phone models have built-in wifi antenas. Have you Noticed how many of the hot new mobile phones are Unix based (Iphone, Android, Limo phones, Maemo, etc) and support 3rd party app development?
Now, what if we allow cell phones to work as wifi routers to a global mesh-network? Yes, it would be fatal to telecoms... but I would certainly be great for companies like Google which wouldn't depend on telecoms for moving content to a very important segment of the market.
Naturally, it would be fantastic for consumers, an it would bring low cost communications to the poorest parts of the globe more efficiently.
All that is required is a app, like the one we have on open-wrt, which enables our routers to form mesh-networks.
It is a wild idea, I know. But those are the ones that change the world!