Is it possible for transnet to make economic loss in the short-run? briefly motivate with the aid of a graph

If people start defaulting in using trains, there is a big possibility for Transnet to make economic loss in the short-run. Transnet is an enterprise which is state-owned. It is considered as  the largest and most crucial part of the freight logistics chain which delivers goods to each and every South African. It includes the following industries: 
-Port management;
-Logistics; and,
-Pipeline management.