Amen. This barely (if at all) applies to enterprise startups ("make something people want to tell their friends about" doesn't run up against internal decision-making and budgets very well... and "something that's easy to explain" is something that's only relevant in the right industry) and doesn't apply at all to startups in particular industry sectors, government-oriented, or even many hardware oriented ones.

This applies to a subset of Silicon Valley-style, hyper consumer oriented, VC-backable startups that at the end of the day, are fairly interchangeable.