You've got to remember that cancellation as far as BA went was not really about raw economics, more about a naive CEO who trusted his Engineering Director. The post-911 era was exremelly difficult, but the BA Concorde market started to pick up very well. The engineering director of the time was paranoid ant-Concorde, and always had been. As an ex-BA F/O (B744), I had the mis-fortune to meet this guy once, and when the subject of Concorde came up in conversation, he almost started boiling over and dribbling at the mouth; he hated the thing. When the French came out with their 'reasons' not to continue flying, all of his Christmases came at once. He told the CEO that this airplane was unsafe, and BA should stop flying as soon as possible. A Concorde pilot friend of mine told me tha.t BA had an excellant legal case in fighting the Airbus decision to withdraw technical support without a massive increase in product support fees, but the CEO did not want to upset Airbus. The mind boggles.