Talent does not grow on tree on its own but in organizations like yours, but not everyone is destined to be a talent. Those without the proper attitude for becoming a talent had to be let go, so the outcome is the same, only arguing the conclusion. You had bad luck with 3 bad ones for one good, but the usual ratio is not too far from this actually for other organizations. When you find the good attitude people it is a joy, especially if they grow into your environment, being tailor made for your figure. That will even be better than the one reused from elsewhere. ; )
I think there's a good chance that stories like these often come from situations where the one being "supported" have little to no functioning feedback cycle. Much of the time a manager just never reflects on their own communication style or that of the corporate system they're a part of, and don't realize how ambiguous someone's progression or success is. Although I am not suggesting this is OP, but in general
Talent does not grow on tree on its own but in organizations like yours, but not everyone is destined to be a talent. Those without the proper attitude for becoming a talent had to be let go, so the outcome is the same, only arguing the conclusion. You had bad luck with 3 bad ones for one good, but the usual ratio is not too far from this actually for other organizations. When you find the good attitude people it is a joy, especially if they grow into your environment, being tailor made for your figure. That will even be better than the one reused from elsewhere. ; )