Well, I was imagining it as something like a virus because there are companies that are really good initially, but as they get bigger, some of the old people go

Well, I was imagining it as something like a virus because there are companies that are really good initially, but as they get bigger, some of the old people go away, new people arrive, and certain type of new people will be the type to only want to hear good news, and spread good news. This person will also hire similar other people, and the person will initially seem to perform much better than the others around them which incentives others to follow similar suit or otherwise not get as far in their career. So this influence spreads like a virus, but yes it has to start from some part of leadership.