Actually it did, the reason it shut down was because the air-frames were old and maintenance was becoming very difficult.
http://theadaptivemarketer.com/2012/01/14/a-pricing-lesson-from-the-concorde/
Good article. It could also explain why more than one startup company is looking at building supersonic jets.
Boeing was going to do it until 911, then they decided to build the 787 instead.