They might see value in it if staff no longer feel comfortable working there.
New staff means lower wages and higher profit margins.
or new staff means less experience with the company's product/process, longer ramp up time. By the time it takes to become experienced, they now have become old staff, and must now leave as they find the company's policy sucks. Enter new staff - cycle repeats again, and no innovation or change happens in the company because peopel constantly turn over.