The Qantas A380 order was announced in November 2000.
They didn’t arrive until 2008 after long delays. In the ensuing 19years. Yes 19 years since the order was announced more efficient aircraft came along.
The orders were cancelled because more efficient and more suitable aircraft now exist to replace the A380.
Thats exactly what the Qantas CEO has said. The A380 is no longer the preferred option for any airline now the 777X or A350 is available. Half the engines, less maintenance cost, almost half the fuel burn. Not that many less pax carried.
The A380 as an aircraft hasn’t made a viable business case for a long time with better alternatives available. Your overinflating the significance of a business case study when its f&$$ing obvious the A380 has better alternatives and has had for many years. Market for used A380s is non existent too.
Qantas are not doing anything differently to any other airline. A collective team of chimps are capable of working out there wasn’t an investment case for an A380 in 2019.