It isn't 1950; people are mostly going places other than city centres. Old style rail doesn't work particularly well for that.
asia and europe get by fine with rail. if china can build 20 subway systems and 50 HSR routes in 10 years so can america
Infrastructure like subway stations drive up local prices which means people who don’t use them tend to migrate somewhere else.
We suburbanites avoid doing city stuff because the 11th-14th commutes (that week) would suck.