I say human dignity is non-negotiable. So there should be a legal minimum wage which is automatically adjusted to the living prices of wherever the person you hire is expected to work.
If you are unable (or worse: unwilling) to pay people enough to survive of your work, you are irresponsible and a leech on society that should be out of business anyways.
I understand that some have been brain-washed into believing that leveraging your education, inherited wealth or position of power to exploit others is a sign of being smart or some sort other conclusion that coincidentally justifies the desirable outcome — but that doesn't change the self serving nature of anybody discussing for that kind of exploitation. And as markets have shown to suck at respecting any externalities, be it nature, culture, the rights of future generations or human dignity, they have to be regulated to do so.
If your business is unable to survive that, it wasn't for the benefit of society anyways.