At some big companies at least, I think it is a policy to have to post the job publicly even if the person who was waiting in line inside the department for a f

At some big companies at least, I think it is a policy to have to post the job publicly even if the person who was waiting in line inside the department for a few years already has it. I have had two jobs in the past posting inside the department that 2 or 3 people had to waste their time interviewing for with zero chance just as a matter of policy. The manager had to interview x number of people in the name of fairness or something like that.