I've been in SV for 15 years, and one (out of four) companies has been incredibly cult-like. The exec team, and CEO in particular, often espoused how we were going to change the world of $INDUSTRY forever. Any talk of existential problems was met with accusations of disloyalty. People who were even thinking about leaving or interviewing elsewhere were viewed as disloyal and got "the talk" from the CEO or CTO.