I think one key thing everyone is forgetting in the whole sprint wimax deal is that, clearwire said that they have made their 4G Wimax network very flexible in that at any moment if wimax looks like its dying (the cousin of HD-DVD) that literally with the flick of a switch they could convert over to LTE.
http://mobile.engadget.com/2009/09/1...uld-be-easy-t/
Now thats a smart company, not putting all of its eggs into one basket. It was really smart of them to do that, because with each day that goes by more and more carriers are going with the LTE technology. I keep thinking that they may have to flip that switch soon!