the problem with rail is two fold. one, rail is very slow. for example a truck from boston to LA takes 3 days. by rail 7-10 days. in a just in time inventory environment this requires more capital tied up in inventory. two, with a limited number of ramps (rail yards)that are accessible by truck and the lack of dependable rail schedules it can be a logistical nightmare getting freight from the ramp to the customer on time and in needed qtys.. finally (ok there are 3 issues) your tax dollars support all rail lines and railroads including CSX so untill they can make a profit with out massive tax payer assitance it doesn't make alot of sense to expand a losing(for now) venture.