The thing is that First/Business class has also been upgraded considerably as well. As has in-flight options like WiFi. And there are, for example, Business-class only BA flights between City airport in London and New York.
Even among executives/investment bankers/international lawyers, there really isn't that much demand to go back and forth from the US East Coast to Western Europe in a day which was a big pitch from the Concorde. A faster plane starts to look more interesting Trans-Pacific but that's a whole other set of tech challenges. (It's greater than the Concorde's range.)
Even among executives/investment bankers/international lawyers, there really isn't that much demand to go back and forth from the US East Coast to Western Europe in a day which was a big pitch from the Concorde. A faster plane starts to look more interesting Trans-Pacific but that's a whole other set of tech challenges. (It's greater than the Concorde's range.)