<p>@Periwinkle, I appreciate the point you are making, but perhaps the Concorde is not the best analogy. Commercial Concorde service was discontinued, not because of flawed economic model, but because of flawed mechanical design. </p>
<p>Concorde super-sonic service was arguable “worth it” to the rich clientele for whom time-is-money. Now there exists no equivalent commercial product.</p>