That article seemed rather low on content, but the fundamental question remains: how could the carriers be replaced. Would individually operated antennas be feasible? I think it is more an economics problem than a technical problem. Some kind of Micropayment scheme would have to make it sustainable for individual antenna operators to allow users to log in.<p>Things like that exist for WLAN hotspots, but how well are they doing?<p>Another problem would still be the frequency negotiation, we wouldn't want more antennas in any one region than necessary.