That's how technology development works!
Really? Some are all set to dump existing, mature and working wireless technologies that provides known capabilities right now using existing equipment, for an undeveloped, prototype system that would provide superior performance at some unknown point in the future?
I don't know how to break it to these people, but no one has been saying that the NBN being rolled out is the best and fastest network technology humans are ever going to develop. There is always going to be better and faster on the horizon, but anyone who has ever been a tech enthusiast could tell you, waiting for better and faster is a wait that never ends.
I just read the Ngara Final Report; interesting stuff, but even they acknowledge it isn't close to roll-out, and by the time Ngara is ready for wide deployment there will no doubt be something else on the horizon. Are we going to hold off on Ngara and wait?
You put the network in now, invest in the infrastructure roll-out and benefit from the improvements in connectivity now. Upgrade the network later when technology matures and the hardware cheaper and the infrastructure is already in place to make it easier.
It is not as if the NBN wireless network is a wasted white elephant anyway, it is a mobile LTE/4G network that is used by mobile phones.
Icon: Steam-powered pneumatic tubes is obviously the best information exchange technology available, so forget all this newfangled electro-magnetic rubbish. You cannot transmit chocolate across the EM spectrum, people! Plus, it is WAAAAY more romantic!