Take it from a distribution guy.... wholesalers make a ton of money on inflation. They own at x... vendors raise price to Y... and they sell at Y.... making great instant invoice margin at no cost. (McLane)
Assume this holds true for railways too... Warren is a genious- he is going to make a ton of money with this inflation trend.
Process called N.R.G.P. Non reacquiring gross profit. Wholesalers (among others)love price increases. Current inventory sells at new cost. Overnight gross profit, just by opening doors. Ain't life great!