ADSB will make working in the bush safer
How?
Statistically there is no measurable risk of mid air collision in class G airspace. During NAS the risk assessment for class E airspace was (from memory), one in ten to the minus five. There is one death per year attributed to mid air collision of recent time in the whole of Australia. There is a requirement for the use of radio in the CTAF where applicable which gives alerted see and avoid. As with the gliders, the highest risk being in the near vicinity of aerodromes.
What risk exists en route Boulia to Alice Springs?
Airservices are the primary beneficiaries of this technology and do have the option to charge for an enroute service that is not needed. Avdata would also benefit.
The new generation ELT's cancell the SAR arguement even if Airservices were monitoring every VFR flight which they don't.