Does ethical analysis only rely on who made the mistake and not who suffers the consequence?

As I understand every corporation, passes on the cost the customer and aims for some specific number as a margin, if their costs increase either they increase productivity of their worker, or implement cost cutting measures, or pass the cost down to customers.

Lots of people think, Amazon's loss results in Bezoz getting a haircut on his paycheck.

What if Amazon starts asking for more productivity from its warehouse workers then buying something at Amazon's loss is directly tied to how they treat their workers.