This is not a phenomenon, this is just a strategy that helps them to overstep some difficulties. It is always better to learn from other companies mistakes that from your own.
Having a clear view of the real expenses will give you the possibility to calculate the real profit and to identify your spending patterns and segments where you have a chance to cut the cost and dramatically improve your profit.
Running a trucking company without knowing your costs is like driving with your eyes closed. You have to know the cost of every mile that your trucks are driving.
Download Cheat Sheet: 10 Secret Tips to Increase Profit Of Your Trucking Business