Can't go supersonic over inhabited land in this day and age. So all it does is shave some time off on ocean crossing. Like flying the 3000km from East Canada to

Can't go supersonic over inhabited land in this day and age. So all it does is shave some time off on ocean crossing. Like flying the 3000km from East Canada to West Ireland in 1.5 instead of 3 hours. At extremely increased cost. It's a hard sell in an industry that's competing for price efficiency.