> I
You are not the only consumer of air travel. Supersonic is not for you, it is for elites willing to spend 4x the ticket price for half the flight time. Concorde tickets were $6000 for D.C. to London in the mid 1990s, so about $12,500 today, and that was for an economy-style seat. It was very popular among a certain segment.
East Coast US to Europe in 3-4 hours versus 7-8, West Coast US to Asia in 5-6 hours versus 10-12.... makes it more like a domestic flight.
My dad got upgraded to a Concorde once (for reasons I don't know) from First Class on (I assume) Pan Am. His reaction was basically meh. Got into London at rush hour and he really wasn't that impressed.