“real estate is expensive and NIMBYs don’t want it”… the end.
(Also the story of why Hyperloop is pointless. technology isn’t the problem that needs solving! Fast rapid transit tech has existed since the 1980’s and it’s not the cost issue.)
That, and don‘t let the fox in the henhouse (namely, if you decide that contracting to consultants is a good idea, you do need in-house staff to make sure they‘re just not perpetuating an endless gravy train, and other consultants are not a substitute for this)
(Also the story of why Hyperloop is pointless. technology isn’t the problem that needs solving! Fast rapid transit tech has existed since the 1980’s and it’s not the cost issue.)