They lose much more than money. Rumors start going around; 99% of the cities in the world aren't THAT big that rumors aren't a thing -- they are. People start distrusting the company, it gets a reputation of "only work there if you're in danger of living on the street", qualified people recommend only their lower-qualified friends (or simply opportunists), etc.
It only goes downhill for these companies and they lack the maturity and intelligence to recognize they brought it upon themselves and maybe start trying to turn things around.
Oh well, screw them.
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Related: I sometimes wonder just how much money companies lose on trust issues. Even with regular people, I often see companies spending money doing everything imaginable to make it as difficult as possible for workers - on which, too, they spend money - to do their jobs.