There are a fair number of "cost is no object" people out there - Boeing has delivered over 200 Boeing Business Jets (including seven 777, nine 787, and eight 747-8) and the cost of the custom interiors is typically similar to the cost of the airframe.
It's long been speculated that the next supersonic passenger aircraft would be a business jet - this would seem to confirm that.
All that being said, I'll believe it when I see it. There are some major regulatory challenges (today's regulations are far removed from what Concorde was certified to), and the greenies will certainly have a hissy fit over the environmental impact and carbon footprint of a supersonic toy.
Last edited by tdracer; 18th Nov 2015 at 17:29.