content: The other possibility is a lot of 'silicon valley' culture is promise the moon, get funding, figure out how to get there later. She did steps one and two OK, but never had the ability to do step three. That's the most charitable explanation I can think of.  Also 'figure out how to get there later' is much easier in software, which sets the cultural tone for much of Silicon Valley. Hardware is much harder. Medical, harder again.