Dick,
I didn't intend to appear doubtful of the virtues of ADS-B, as I have supported you on this point in other threads.
I also mentioned in another thread that a man of entrepeneurial vigour may see the opportunity to supercede ADS-B before it becomes mandatory and develop the inevitable improvement that (to commit the ultimate forum sin and quote myself) "knocks it for 6". At the same time, developing a product with substantially lower price and application from an A380, a C162 and, say, a CJ3 might have a head start on capturing a global market.
I realise I'm taking you out of context, but I'd say "Australia leading the world" is overdue in this market.
I don't have the resources, or the technical knowledge required. Do you know anybody?