Don't care. No one is banning supersonic travel, just supersonic travel over land. If it can't be made to work economically over the long oceanic routes then it is a dumb idea that deserves to die. Again. If it works over water then it can stay there.
if it can't be made to work economically then there is no need for regulation to explicitly ban it. That is like saying 'nuclear fusion can't be made to work economically, so lets introduce regulation to ban it.'
That is just an incredibly mindbogglingly stupid way to handle regulation in this sector.
If anything regulate the SOUND being produced and how loud or often they can be.
In fact, with the coming revolution in electric aviation, we could actually have super sonic over land travel. A possible solution beyond the airframe for the BOOM problem is to fly higher and in lower density air.
But if you start flat out with regulation that makes any such innovation incredibly difficult and risky its unlikely people are gone invest in such innovation.
And with electric flight its exactly the case that it would be overland, as it would start out with shorter routes and not cross Atlantic flights. Thus this regulation literally kill possible investment in such architecture.