Why would someone in the developing world want their computer to be reliant on their phone? Presumably for cost, but that isn't an argument for docking-phones, is it? You'd still need the system case/power supply, display, keyboard, and pointing device (and would presumably also have speakers and camera, though I suppose you could reuse those of the phone, if you were really trying to cut costs). The only thing missing is the "computer", and an ARM system-on-a-chip that packages multicore CPU, memory, and a little storage can't cost more than $10 today, can it? Besides, since you'd have to have smarts to drive the networking/remote desktop features of the non-computer computer, you'd probably use a very similar chip anyway.