"If DIA can afford to pay a $9 million penalty for delaying the contract execution beyond Sept. 1, surely it could afford to engage experienced professionals to evaluate the deal from Denver’s viewpoint (e.g., Bain, McKinsey, Boston Consulting)."
That might interfere with the DIA management & city council's bonus plan. DIA has been one boondoggle project after another. Automated baggage system? Rip it out!
Fancy fountain in the main concourse? Rip it out!
Great view if the iconic roof as you drive up?  Block it with a hotel.