We are who we are
Would HSR be better than the interstate system plus short haul airliners? Sure. Is it more affordable than buying more airliners & expanding the airport & freeway systems? The HSR people say it is & it's probably true, too. But those are things with financing schemes, however imperfect, in place. As a nation, we're no longer capable of coming together out of anything but fear. The rest of the time, we whine about the other party & make transparent excuses about how we're still better off than all the other countries that don't just talk about, but do, great things.