Excerpts from Books and Wikipedia
"The British and French governments signed a treaty in November 1962 to share the project. . . . Only 14 aircraft were built for commercial use. . . . Production delays insured they did not enter service until 1976. . . . Unfortunately, limited fuel capacity rendered the aircraft unable to fly the lucrative Pacific routes, and environmentalist opposed their landing at several US airports because of noise pollution. Concorde remained in service until October 2003, when rising costs and falling revenue in the wake of 9/11 made them commercially unviable." [Furtado: 1001 Days]