Hi - I use NAB Amex so 1.5 points per dollar.I pay 1.45% for privilege. So if optus makes .5%, Nab keeps .95%, NAB then pays qantas .5% (for the points) and keep .45% for itself.
If NAB didn't allow me to pay by AMEX or limited points or whatever that would be .45% they are losing.
So, why would they stop?
AT0 - wins - tax is paid enthusiastically
Optus wins - using their gateway/clearing house/whatever we call it (0.5%)
Qantas wins - paid for the points (0.5%)
NAB wins - paid a percentage (0.45%)
While commercial entities are making money wouldn't they be mad to stop this?