Been knocked beck on requested upgrades PER-DRW but still 7 seats available. Not a problem at QC, upgrade processed straight away...still 6 seats free on the flight. Can't figure out why original request was not granted but that's life.
Don't forget ff points are not free and Qantas makes most profit from the ff program, so I am paying for business class fare when I use them.
You are not "paying" anywhere near what a revenue business class passenger would pay when you upgrade with points. Hence they won't grant the upgrade request until they are certain they can't otherwise sell those seats.