100% agreed. alttab is falling into the common geek social trap of assuming that all the world is exactly like him/her. Personally? I couldn't care less about start-ups. I'm happy that they exist, I appreciate the innovations they create, and I enjoy the fruits of their labors, but to act as if the alpha and omega of existence is solving the problem of what causes start-ups to fail is IMO fundamentally both arrogant and wrong headed, because start-ups represent only a small percentage of the tech world at large.
