the point isn't that businesses use only rail. the point is that govt subsidized infrastructure is what helps business keep costs low. this helps the business owners more than the people they sell goods to. it seems to me if the costs were too high, people would make do with local products and the businesses we see today would not be as practical.
if you want to talk about govt subsidy look at the FAA and airlines. apparently all of these things benefit those earning <$30k/year. some dumbfuck wanted to compare only the costs of the federal subsidy but that is not what is paid out to the companies that transport, ship, and have protection for their goods. there are dozens of other infrastructure benefits but i'm only thinking of a few. what is paid out to the companies who benefit from govt subsidized infrastructure is the profit they receive from selling their products.