Low Cost PCs for Underdeveloped Countries

It seems odd to me that underdeveloped countries are trying to get low cost PCs when terminals like WYSE, or something custom with the cool new Acme Fox processor can be achieved far more easily. They also have lower power consumptions, no moving parts, and have many other advantages over regular PCs. If you connect WiMAX (or something comparable) wireless technology with this and have a central server room on UPSes, solar augmentation, and regular line power, you could really have something. Or swap out the WiMAX (or something comparable) with satellite communication. So this is what I see to be the future for computing in underdeveloped countries and communities around the world -- labs filled with terminals.