Yeah, the lack of supersonic overfly on most countries (not just the USA) was one of the main factors against Concorde (despite the fact that in many cases the decibel levels were lower than cotemporaneous aircraft).
It's no coincidence it's main routes (London->JFK, Paris ->JFK) are 90% over the Ocean.
If you actually managed to get long distance hypersonic routes (such as London->Sydney, or even London->Beijing, London->Tokyo, etc.) at a significant time reduction, I can see it working.
It's no coincidence it's main routes (London->JFK, Paris ->JFK) are 90% over the Ocean.
If you actually managed to get long distance hypersonic routes (such as London->Sydney, or even London->Beijing, London->Tokyo, etc.) at a significant time reduction, I can see it working.