Some employees abuse the system. Some employees are unproductive. Some employees hide behind excuses of 'busyness, meetings, e-mail and poor work/life balance'. To attempt to manage them, more command and control practices are introduced. Because such practices cannot really be selective they tend to exhaust and stifle your very best people, those who do enjoy the job, do enjoy dealing with challenging clients and do recognise that business is-well-messy.
Releasing talent isn't just about hiring a 'talent director'. Releasing talent is about ensuring managers understand that leadership is about enabling a person to be the best version of themselves as then they will do great work for you. Even if that means one or two wake up so much that they realise they don't want to work for you anymore.