We won't get anywhere if we treat transit purely as a response to pent up demand. Transit induces demand just like auto infrastructure does, and the better service is the more demand is created for it. Frequent intercity transit between two important cities is a basic aspect of infrastructure that you don't see people regularly question the existence of, except in North America. The job of today's transit projects is to create the ridership patterns of the 2030s and 2040s, not to wait for ridership and then build after, or ridership will never happen.