Perhaps the perception is, that there is only "a handful" of dedicated rapid transit modelers. More modelers in New York, Philadelphia, Chicago, and Boston, are more familiar with the rapid transit lines, than with Amtrak, CSX, and Norfolk Southern. And in those cities, a lot of Amtrak employees get to and from work, on the rapid transit lines that run past the Amtrak stations. Some of which are model railroaders.