Trojan
Yep, and I've flown to/from each from/to Willy commercially. But what about the possibility of flying in one's own aircraft - for business or pleasure - to this region? Pretty much can't be done.
Willy won't let private GA in, and fields like Cessnock are just too far from the centre of this region. In any case, I'd argue that Willy is also too far from the likes of Gosford (for example) to be a viable choice.
You're right, airports do seem to be disappearing.
I know that the USA and Australia aren't the same, but imagine there being a SINGLE place in the USA with this sort of population without a single airport!?!?!?