A plane at supersonic speed: why did it fail?

Remember the Concorde? The first supersonic commercial airplane that could’ve been the best thing in the world for a long time to come, is now in the Smithsonian museum. A plane that could take you from New York to London in 3.5 hours is now obsolete. Why is that? How would an aircraft so magnificent be relegated to a relic? A passenger get that can go Mach 2.0 is no longer in commission. What happened? This video goes into the depth of what’s happened with one of the fastest aircraft ever.