That's not completely correct, WiMAX is a standards based technology, if you deliver a true WiMAX product it better work with anyone's network supporting WiMAX or you can't call it WiMAX; the question comes down to the frequency range being used by the provider which will determine if you can interconnect with a WiMAX signal. Of course actually getting access to a network will be similar to how many Wi-Fi hotspots work today where there may or may not be an authentication mechanism used to gain access to the internet.

Nokia's release of the WiMAX on the IT tablets is nothing more then a beta test for Nokia...which I believe all long as been the idea behind the IT's in general. It let's Nokia test out various technologies such as WiMAX, using Linux, VoIP, etc. on a rather sophisticated user base (most of use know what a xterm window is while not committing a ton of capital towards there real money making cell phone product.