I don't think that's a useful comparison. Supersonic military planes have been common for decades. We don't have supersonic passenger planes because the FAA has

I don't think that's a useful comparison. Supersonic military planes have been common for decades. We don't have supersonic passenger planes because the FAA has banned supersonic flight over land since 1973, though the agency is planning on replacing it with a noise standard. Also the original supersonic passenger aircraft were government-sponsored tech demos, not financially sustainable products. With updated laws & modern technology (cameras instead of tilting noses, more efficient engines without afterburners, lighter materials), we could have viable supersonic passenger flight.