Musks teaching from Space X;- “Build it and they will come’
Yes, Concorde indicated it doesn’t work ever time but in the U.K. Concorde has been used as an excuse to never do that again....... bad logic as you’ve got to participate to have a chance in creating something really special.
As the Americans found out, there are easier ways of doing that.
I'm playing devil's advocate here; the temptation of a forum such as this is to say "This was a wonderful design" – but the design itself is irrelevant. All these projects are a means to an end. You have to keep on asking yourself: "What do you want to do with this design?"