There's also a large percentage of the country that simply wouldn't benefit from rail in their day to day lives, because most of the country doesn't have the po

There's also a large percentage of the country that simply wouldn't benefit from rail in their day to day lives, because most of the country doesn't have the population density to make rail make sense. It would at best be an alternative to flying, assuming it didn't take longer. These are the same people for whom owning a car is an essential part of life.