When growing your people, you may find that some patterns emerge.
If you keep hearing the same issues in exit interviews—if you keep HAVING frequent exit interviews—then you have a problem that needs fixing.
If you keep training and developing your most-talented people and then, after a few years, many of them leave, then you have a problem that needs fixing.
It might be the corporate culture. It might be a (real or perceived) lack of growth opportunities. It might be that Kevin in accounting is a creep. But if you see a pattern that hurts morale, retention, or the development of your people, part of your job as the leader is to fix it.
Go upstream and find out why. And then work to create a solution that will solve the problem.
(image source: https://www.linkedin.com/pulse/neurodiversity%2D101%2Dwhy%2Dwe%2Dneed%2Dcare%2Dmore%2Dchildren%2Dprof%2Damanda%2Dkirby%2Darjfe/)