There has been some openness towards reversing the ban. But it doesn't look any serioys movement will happen until after someone makes a plane and proves it's

There has been some openness towards reversing the ban. But it doesn't look any serioys movement will happen until after someone makes a plane and proves it's quiet enough. So Boom are taking a bit of a leap of faith, and also designing it to be capable of trans-Atlantic flights as a semi-profitable backup plan.