I understand what you want to say, but taken literally, I am sure you know many humans who would not pause and think twice about the birds. They would think twice about the cheapest way to harvest and that would pretty much be the extend of it.
I doubt that the survival-of-the-fittest environment is a product of the economic system. It is the converse which is true. Our society which includes economic system is a product of survival-of-the-fittest because it is hardcoded in our DNA, in fact in the genetic material of every living thing.
This doesn't mean it's easy to change people's minds, though.