Concorde Commercial Failure (1976-2003)
British-French consortium built 20 supersonic airliners promising to halve transatlantic flight times. Only 14 entered service with two airlines, never achieving profitability. High fuel costs, limited routes, sonic boom restrictions, and a fatal 2000 crash ended the program.
Concorde operated for 27 years but never expanded beyond Air France and British Airways, ultimately retired in 2003.
Demonstrated that revolutionary aircraft technology alone doesn't guarantee commercial success. Operating economics, regulatory constraints, and airport infrastructure matter as much as engineering breakthroughs.
JetZero faces similar risks: novel certification requirements, infrastructure compatibility questions (wide aircraft at existing gates), and the gap between technical promise and commercial viability. Unlike Concorde, JetZero's value proposition is cost reduction rather than speed.
