Jason Martin argues that leaders must be mutually accountable to their teams and provide the support people need to succeed. If they don't, people leave. He compares it to parenting: a coach who can't give clear guidance for improvement isn't worth staying with.
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You got to get good at holding them accountable. Then they need to get good at holding you accountable, because if they need help and you're not there to help them, they need to find somebody else because you're not their leader. So your job is to supply all the support that they need. I think this same thing with raising children, great children. If the parent can't supply what that child needs to grow up to be a mature adult, then that's a pitiful parent. I always told my son this when he was playing college basketball. I said, "If the coach can't tell you what you need to do to get better, you need to transfer because you're not playing for a good coach." Now, he never transferred because he always played for good coaches.