Why Shipping Beats every other type of transport in cost

Ships as we all know, are one of the largest things made by man. But being so big, how is it so cheap than any other mode of transport? 

Now many people think think that ships are big so there are expensive. That is correct as more than 2 Million Liters of oil is used depending on ship size & journey length.

But for just 1 customer (Customer- Companies, Corporations), it is only a few thousand bucks. Here’s the Math

The Math (Not real numbers)

This is the main reason why this industry is so valuable. Instead of 20,000 truck drivers & trucks. You can employ just 20–40 Crew members to take 20,000 Containers across the world.

The point is clear why maritime leads the transport industry. The sector is expected to lead for many years to come.