alphadogg sends this NetworkWorld story discussing the obstacles Clearwire will have to overcome to succeed, which begins: "Clearwire recently announced the completion of its Sprint Nextel transaction and the formation of the new Clearwire Corp. In addition, it received $3.2 billion from Comcast, Intel, Time Warner Cable, Google and Bright House Networks. As expected, Clearwire's conference call emphasized all the positive aspects of the deal. Namely, it owns lots of spectrum, is building an all-IP network that is 'open,' and will use fourth-generation (4G) mobile WiMAX technology (IEEE 802.16e). I'd love to see a nationwide 4G mobile network, but let's be clear about some of the challenges facing Clearwire, including cost, device and competitive ones."