At a lot of places, there is a single technical track, and when you get to a certain level of experience, the only place to go is into management. Also, there i

At a lot of places, there is a single technical track, and when you get to a certain level of experience, the only place to go is into management. Also, there is a general disinterest in treating people management as a separate, first-class discipline, and most places devote no resources to training and support, particularly for front-line managers. People left rudderless but with strong and inflexible demands on their teams will often revert to a control freaky micromanagement style, out of pure risk abatement. Bad managers are products of bad cultures; there are (thankfully) very few actual psychopaths in the world.