I think it would only be fair for Australian registered aircraft then to be given 10 minute plus enroute holding prior to exiting the Australian FIR. Clearance not available. See how quick it gets fixed then.
How about a reduction in ATC fees by 50% per 5 minute delay ? There is zero cost incentive for ASA to fix this.
It is absolute B/S, I have flown cost index 0 for hours to drop 20 plus minutes as requested by ATC, hit the target within 10 seconds, to be held for a further 10 minutes low level.
Then we hear complaints from domestic carriers when they basically fly multiple narrow bodies in parallel on that same city pair for an occupied landing slot that was known before that domestic aircraft probably pushed back two sectors ago.
Same goes for a domestic carrier PER to SYD, ATC knows their landing slot hours out, why are they launching aircraft out of MEL for SYD for the same slot, instead of gate hold ?
All these costs are passed onto the Australian consumer, it is costing them millions, costing ASA next to nothing.