The problem with supersonic commercial jets was mainly one of marketing/politics. The so called "sonic boom" problem was vastly overhyped, as anyone who lives near an air force base can tell you.

The conspiracy theorist tells me the American aerospace manufacturers at the time (Boening, McDonnell-Douglas, etc.), did everything they could to kill the Concorde. With limited flyable routes (NYC and DC to Paris and London I think were the only ones), the financials didn't make sense. If overland routes were available, especially opening up LA, San Francisco and Chicago, it might have been a different story.

Seems... wrong. Booms broke windows and drove zillions of complaints. Supersonic flight near airbases is controlled and happens on specific traffic corridors, right?