[p_l]

Not really. What killed Concorde was combination of politics (voices to get rid of it in both BA and AF, Airbus not wanting to continue support contracts), the extra time lost after 9/11 (the door replacements took more time), and finally airlines finding out that they can bring the same profit with normal wide bodies.

Because yes, Concorde was wildly profitable by 2000 - winter quarters it was majority of British Airways profit.

The problem with Airbus was that they really wanted Concorde to die (and pretty please buy more A340 and maybe A380 in its place) and the quality of their parts was getting worse - especially vertical stabilizers, which had increasing rate of failures.

[valuearb]

Airliners at the end of their service life are usually very profitable, because you aren’t counting on their cost if replacement. And of course parts are going to be expensive on a plane that’s been out of production for nearly 30 years.