You are mistaking, admission to Harvard with a "career in academia". Being admitted to a school has some correlation to your achievements (legacy students and affirmative action aside). Being one of the small percentage of graduate students that gets a paying job in the field has far more to do with your loyalty and your willingness to subjugate yourself to the will of your superiors - as the author of this piece (and anyone else who has come up through the ranks of post-grad education in the last 25 years) rightly points out.