Comment by noisy_boy

It is not so dissimilar in Finance. Senior manager comes, understands the lay of the land for a little while to form a picture of what changes they need/want and pushes out people to get his own people in. There is a lot of politics in banks etc and it becomes very important to them that they get rid of threats or those who won't unquestionably carry out their wishes. It is usually justified as shaking things up. Predictably such things are not great for quality of work but then again, that is secondary in a politically active space that a lot of Finance places are.