Earlier quoted context omitted.
They want smart people and those smart people tend to go to good schools and get hired by Google, McK, Bain, etc.
they should want risk-takers, not people seeking the shelter of Google, McK, Bain, etc.
Muse uses technology to tackle very traditional industry-type problems - career planning and recruiting. A team with a combined 5-10 years at McKinsey and the exposure to an international network of thousands of very smart and career-driven people (plus lots of client companies) is exactly who you would want for this kind of company.
Yahoo and Google were started by PhD students. AirBnB by designers. Marissa Mayer planed to start with McKinsey, Sheryl Sandberg actually worked there (and in politics). Peter Thiel was a lawyer and derivatives trader. Marc Benioff spent 13 years at Oracle.
Why all the hate for people who have not dropped out of college / have worked in another industry? Clearly great entrepreneurs come from all sorts of backgrounds.