Just for laughs I'd like to see a comparison consisting of one measure: average time elapsed between entering a coffee shop and hearing the words "startup," "iterate," "pivot," or "code/coding/ruby/rails" :)
Though the title may imply differently, Jeff's point (to me, at least) focuses on a founder's mentality rather than actually quitting your job. None of the suggestions Jeff includes cannot be executed in a greater organization-whether it consists of 5 employees or 5,000.
Silicon Valley seems to prefer "founder," but all those traits sound close to "leader" in my book.
It is a dangerous thing to not think like a leader until you get to a position of leadership, as a) without a leader's mentality you may not even get to that position and b) once you are there you may not be as effective as you'd like (since you did not have any practice thinking that way).