Ah statistics, gotta love em......
I assume this is about private ops, as professional ops will be IFR. And while I think the ADSB thing has some issues, it is a done deal for commercial ops so there's no point barking about it.
I fly for a living in an organisation where time constraints often apply, so the option to not fly in inclement weather is negated. Additionally 50% of my flying is at night. Disregarding the night flying for private ops, of the remaining day ops in Oz 75% are in conditions where VFR flight is entirely safe, or perhaps that should be 'VFR flight has no weather-related safety issues'.
So for the limited number of private operators, flying for recreation or leisure with no compelling rationales for pushing daylight or weather boundaries, 75% of their proposed flying can be done in completely benign weather.... why would they want to operate under the IFR?
If I was to buy another aeroplane for private use (gods forbid) it would be VFR, and no less safe for it. I would also put a Garmin ADSB-GPS in it 'cause I like gadgets and if I can afford an aeroplane just for !!!!s & giggles, I can afford a few bucks worth of toys.
Really, I think you should quit flogging this particular horse; it's dead.