The SSTs and Concordes caused sonic booms, as I’m sure you know, which was a no-go politically over land. A family friend worked on the North American SST in the 60’s, so I’m a little familiar with the plane. What’s the answer?
The Concorde didn’t retire because it caused sonic booms over land. It retired because it used so much fuel that it wasn’t economically viable.
The answer is to carefully shape the aircraft so that most of the sonic boom is reflected upwards, and is being developed by NASA.