"Fair" is whatever they can negotiate. Who are you or I to say what's "fair" for someone else haggling over prices?
When companies exploit their market power it's good business yet when workers do the same thing it's not really fair any more?
What happens with that high leverage, low competition environment is you end up with the richest country on earth having huge supply chain bottlenecks and rated as having some of the worst ports in the world.
Corporations do exactly this, so sounds very fair actually.