Just so I'm clear, your response to "good workers don't put up with that shit" is essentially "they will if they can't find a different/better job"? Cause that just sounds exploitative and scummy. I'm sure companies make those calculations but it doesn't make it right/moral.

In a vacuum I can understand and empathise with your comment but as part of this chain (where you say "the good people are the ones that perform well in the kitchen when it gets hot.") I can't take it seriously. Which is it? Do the good people perform well (and enjoy) when it gets hot or are they held hostage by the economic times?

It's probably a combination of both. After all, the answer to an equation typically has two or more values associated with it.