>>1208325The thing that killed the 2707 though was Concorde, not directly though, but through existing and showing the world how uneconomic the aircraft was.
Concorde was only ever sold to British Airways and Air France, because both airlines, at the time of them buying Concordes, were government owned, and until the Concordes were retired, the flights were government subsidised because neither airline could afford to keep them flying.
When construction finished for the Concorde and Concorde 002 G-BSST was taken out for a world tour to get orders for the aircraft, airlines cancelled their orders after seeing the aircraft in person.
Lufthansa cancelled their orders after seeing that the aircraft was unefficient at sub-sonic speeds, and after realising that it would need to fly at least an hour and a half at sub-sonic speeds over Europe, they cancellled.
Air India saw the airliner, and while the rich and powerful in India wanted the jet to connect the major cities together at supersonic speeds, political pressure came onto Air India by politicians who realised that the poor masses would hear every single time a rich person was going overhead.
Singapore Airlines cancelled their orders after realising that they would only be allowed to go supersonic on incredibly long routes to Australia and further.
JAL cancelled after seeing the Concorde's exhaust smoke and hearing the jet on takeoff. The visible and audiable pollution freaked the hell out of the Japanese people, and they just didn't want a part of it.
Qantas cancelled for two reasons, the sonic booms for flights from Perth to Sydney/Melborne/etc. and the fact that Concorde didn't have the range to fly to the West Coast US.
After a poor showing from Concorde, who was going to buy the 2707 if it was going to be more expensive to buy and run?