I understand perfectly what ADSB does, and my stance is as it has been for 5 years on this post Capstone, Australia doesn't need ADSB, I don't need ADSB.
The real thing that gets to me is the real folk who have to pony up funds are the Aircraft Owners, and this forum like the last is full of renters or employee pilots who DON'T have to put theur hand in their pocket.
Maybe what should happen is rental on ADSB equipped aircraft should be 200% normal cost and we will see how natural market forces determine how the debate plays out.