Even if there was a business case, the bigger issue with Concorde was the sonic boom. This seriously limits the number of routes for any supersonic plane, essen

Even if there was a business case, the bigger issue with Concorde was the sonic boom. This seriously limits the number of routes for any supersonic plane, essentially limiting it to NYC-London. Building a plane for one route is never going to make any sense. Boom never had any real plans that I know of to fix the… boom