When railways happened, B through Y believed they would see economic benefit, and often did. They got a station. Not so here, correct?
There for, wouldn't this need a government to force it through? How would that happen in the USA?
To me this is where the idea runs in to the buffers, as it were.
Also B-Y is currently very low density and paying someone $X,XXX/yr for this nearly silent tube to pass through their field is not exactly a hard-sell.
Easy. You pay them.
Who? How much? All the same? When?
Then imagine all the people from B to Y who see an opportunity to screw the project for huge amounts of cash. Decades of lawyers arguing in court over every conceivable point, or opportunity.
And that before environmental, and god know what else, groups get involved.
Sorry, no, not easy at all. Not even slightly.
Untrue [1].
[1] http://www.hsr.ca.gov/docs/newsroom/fact%20sheets/High-Speed... - all but the "Northern California Unified Service" and "Amtrak Surfliner" runs are planned HSR lines/stations, and all (including those) are getting upgrades/improvements or new rail/connections as part of the HSR project.