The article linked to in the op explains why it will not happen, without realising it. The article makes big reference to the success of Vulcan XH558. And why is XH558 retiring next month? Because the necessary engineering authorities are ceasing their support. There are several reasons why, but money isnt one of them. For example they are relying on persuading people out of retirement because the systems are so old no existing staff knows them. Rolls royce cited this as a reason for withdrawing support for XH558's Olympus engines - and what engines does concorde have?!!

An acquaintance of mine was one of Concorde's original design engineers. After the Paris crash in 2000, Airbus was so short of people with the necessary knowledge that he and others were asked back from their retirement to work on the design to strengthen the fuel tanks. He is dead now and i expect that most of the others are too. This isnt a problem of money, the knowledge is simply disappearing, and Concorde is a whole magnitude of order more complex than a Vulcan.

imo this is a pipe dream.