Yes you can sell Concorde tickets at profit, probably, but you can make more profit selling premium cabin seats on an A350, even if you fix the maintenance cost

Yes you can sell Concorde tickets at profit, probably, but you can make more profit selling premium cabin seats on an A350, even if you fix the maintenance costs. Although I will say if you reengineered Concorde with 2020s tech, maybe it would close the gap. Maybe instead of "inefficiency" the better argument is opportunity cost. Hardly anyone flies pax 747s anymore, and I wonder how long Emirates will keep its A380s going.