What does management have to lose by not pushing for every single way to reduce labor costs? If they didn't provide any benefits and got as close to the legal m

What does management have to lose by not pushing for every single way to reduce labor costs? If they didn't provide any benefits and got as close to the legal minimum wage as they could, think of all the savings! After all, the point of management isn't to do what's fair, but to extract maximum benefits for the company. Well, even though some labor cost-cutting is helpful to them, at some point that stops being the rational choice, right? At some point they're not going to be able to attract talented workers. Likewise, it's not in a union's best interest to demand so much they drive a company into bankruptcy, whether directly or indirectly. They might do it anyway -- just like there are, in fact, examples of companies driving good employees away through bad management practices -- but that's not a rational choice.