There is a bitter symmetry between the incidence and the prevalence of the punishment beating in NHS culture.
The first reason why the culture of punishment beating exists?
There is a cadre of the managerial community whose purpose is to administer punishment beatings.
Therefore, punishment beating must have value: part of the management infrastructure exists to perpetuate punishment beatings. (Without such value, there would be no punishment beatings.)
This is a self-fulfilling prophecy.