This was a technical marvel but a total commercial failure. Why?
- Sonic booms cannot be tolerated over land, so the flights were largely restricted to oceans
- The range was limited to shorter routes such as crossing the Atlantic
- Fuel useage is very high compared with sub-sonic flights
- Maintenance costs were very high
This is why other commercial supersonic aircraft will not be made anytime soon.
Many in the TV series said if the crash did not happen that the Concordes would still be flying today. I'm not sure on this one.