Mine was with Avis/Budget. Frequent buses and their depot was only 5 mins down the road. I did see people with other companies waiting longer for their bus and getting frustrated.
For me, some issues are easier dealt with in writing, especially when dealing with PNRs, flight numbers, dates, times. It can also be hard sometimes to understand accents and hear during bad voice connections.
Despite all the anti-customer things that QF have done over the years, millions are still loyal to and shackled to the QF ecosystem.
Only offering classic plus rewards on capital city domestic routes is hardly going to change that.