Apart from lack of interest in dis-incentivizing this behavior, two possible reasons come to mind - why managers like these exist:
1. (Nature) Some of them were just tuned that way since childhood.
2. (Nurture) When these managers were junior employees, some/all of their past managers micro-managed them similarly, which built up resentment inside them and instead of rejecting these traits & becoming a better human, these junior employees decided to 'Pay it forward' in the worst way possible and ergo, continue the vicious cycle.
1. (Nature) Some of them were just tuned that way since childhood.
2. (Nurture) When these managers were junior employees, some/all of their past managers micro-managed them similarly, which built up resentment inside them and instead of rejecting these traits & becoming a better human, these junior employees decided to 'Pay it forward' in the worst way possible and ergo, continue the vicious cycle.