Who are you to decide what is ok and what is not? How do you know that building a supersonic jet doesent open up for other technologies or methods that wil impr

Who are you to decide what is ok and what is not? How do you know that building a supersonic jet doesent open up for other technologies or methods that wil improve effectiveness of fuel consumtion? I dont understand with what logic you get to decide that your consumption is ok but other peoples use isnt.