It's pretty difficult and impractical to do a financial or even technical assessment of a concept when it's still in the discussion stages. On a bigger scale, I don't think they were busy figuring out why they couldn't go to the moon when JFK said they were going there by "the end of the decade" back in the early 60s.
Like I've said before, Sir John A. had a vision - a national railroad to link the country together (by keeping the Americans from taking over the western part of it). It seems to have worked fairly well.
Well, you might notice a common thread here, and if you've forgotten, the race to the moon was a Cold War exercise. The Soviets beat us to space, we'll beat 'em to the moon. Wars, or threats of them are ripe breeding grounds for innovation. I personally don't want that to be the impetus for progress, though the advancement is good, the human cost is too high.
Mind you, we apparently don't have any leaders around with that kind of vision - which is demonstrated by the fact that we don't have much of a "national vision" for the future, so our alternative seems to be to simply think short term and leave the future thinking to "someone else."
There is an old and very true expression that says, "If you don't go ahead, you'll go backwards" and perhaps we should be paying more attention to it. Countries don't progress by accident, it's planned. And planning starts with a vision.
What's our vision today? Do we have one? If we do, I haven't been made aware of it. Vast areas of land are one of our 'national treasures' but also one of our big challenges. Imagining what something like a high-speed rail system could do - overlaid on top of some sort of vision for the future - might help it all make more sense.
About as goofy as trying to figure out where Canada is heading, and how it's going to get there! Call it the "big picture of the future", or even a "vision."
The problem with a national "vision", or leaders wth one, is that it ends up being someone's birthchild. Politicians use them to bolster their egos, gain favour, gain power. If it is a failed "vision", they will pump rediculous amounts money into it, our money. Stalin had a vision, so did Mao, not all visions are benevolent or altruistic. A entrpreneurial vision, on the other hand, incurs some risk without an infinite flow of our capital and requires some caution. But the driving force is still money.