While I would also love that, it’s really not the best choice for most travelers. Currently we err in only driving or flying, but even in a well balanced system with a complete rail network that let everyone pick the best means of travel, flying will have the advantage for longer distances.

Even with how slow Acela is, it beats both flying and driving Boston —> NYC. If we had high speed trains, they could be most effective over longer distances, but flying will always be much faster Miami —> LA