Concorde was a loss-making government-subsidized program, and you can always make things "advance" by burning money. Although on occasional years it was (barel

Concorde was a loss-making government-subsidized program, and you can always make things "advance" by burning money. Although on occasional years it was (barely) operationally profitable, it never made a profit once depreciation of assets was considered, much less the cost of the development program. Given the available technology and society's decision to ban sonic booms over populated areas, this (we know now) was inevitable.