[EQAndyBuzz]

What’s the problem with the sonic boom? If you go supersonic 100 miles out to see, who is going to hear it?

[Lazamataz]

What’s the problem with the sonic boom? If you go supersonic 100 miles out to sea, who is going to hear it?

Fish.

We cannot annoy the fish.

[mountn man]

The problem is airports.

You’re limited to near ocean airports, and strictly transoceanic routes.
The Concorde was limited to NY runs, from London or Paris.
They also made some runs down to the Bahamas

Make a supersonic aircraft, with a mitigated boom, and LA to NYC, SF to DC, CHI to anywhere, Or London to Hong Kong, etc, become a reality. Thus more aircraft built, more routes run and lower operational costs.