Save possibly for Sprint, no one's pushing WiMAX harder in the US than Clearwire -- but the commitment doesn't run as deep as you might think. Investing billions in a 4G network that goes brashly against the popular LTE grain is a huge gamble since Clearwire and its partners won't be able to throw as much weight around with manufacturers or achieve the same economies of scale that LTE carriers will, but these guys were smart: CEO Bill Morrow claims that the company has unprecedented flexibility built into its infrastructure, and he's willing to switch gears if LTE or something else ends up burying WiMAX down the road.
