The dream of commerical supersonic flight dies with Concorde

Many British will feel sad today by the last commercial flight of Concorde, a real British (and part French) innovation. Why is it that our children will never get to fly commercially, faster than the speed of sound? It seems strange to me that the commercial aerospace industry is going backwards.

I wonder what went so disasterously wrong with this industry that it will now not be possible for the foreseeable future to fly supersonic.