https://www.consultingpoint.com/news/2020/11/3/how-to-become-a-partner-at-mckinsey-amp-co
even getting to partner is tough. McKinsey employs around 21,000 people and on that basis, around 2% of associates progress to the firm's top tier. study in 2000 by Harvard Business School of 35 aspiring partners at professional services firms concluded that “There are few professional transformations quite as psychologically complex as the transformation to partner.”