People also want the federal government to fund the construction of this infrastructure, which is a very hard sell (and possibly unconstitutional) if you don't average all of those states in some way. Most of the opposition to Amtrak and existing infrastructure projects like the Gateway Project is coming from those states, who don't see improving rail service in the Mid-Atlantic and New England as something they want their tax money spent on.

We need to fix that problem, and that means not simply writing them off as irrelevant because of their lack of population. Australia is likely facing the same problem.