I think you really underestimate how big this country is and how small a 50-mile radius is. That kind of coverage would be absolutely impossible to do.
You're not terribly familar with the existing freight infrastructure in the east coast then.
Look at a map of Pennsylvania, one of the larger and more sparse eastern states. 50 miles from any point will get you to Erie, Pittsburg, Philadelphia, Harrisburg, Allentown, Scranton, etc. All of which you can ship and receive freight by train from.
And that is a bad example of a state where it could work. Try looking at Jersey instead!
Look at a map of Pennsylvania, one of the larger and more sparse eastern states. 50 miles from any point will get you to Erie, Pittsburg, Philadelphia, Harrisburg, Allentown, Scranton, etc. All of which you can ship and receive freight by train from.
And that is a bad example of a state where it could work. Try looking at Jersey instead!