What makes you think WiMax will be limited to "cellphone" devices?
Sprint may have an interest in keeping WiMax AWAY from "cellphones" and towards other uses, as they own 100% of the CDMA/EVDO cellphone network but only 51% of the WiMax network.
It seems to me that they're talking about some sort of IPTV system (similar to U-Verse TV perhaps) delivered over WiMax.
