Solving some societal or civilisational challenge with supersonic flight seems very narrow minded now. Yes I would like to fly to my work HQ faster but due to pandemic I have not visited in 3 years now and it’s been fine, so a better solution is excellent remote work tools such as HQ videoconferencing etc which is such an easier problem, yet many people and companies still struggle with it. In the overall ROI for things to do, I bet we shouldn’t be building businesses that REQUIRE supersonic flight to succeed.