I'd rather hear an answer to the main point: if the theory is so good, where are the great companies that have been created by people consciously applying it? (

I'd rather hear an answer to the main point: if the theory is so good, where are the great companies that have been created by people consciously applying it? (Of course, if it's just about listening to feedback, that's something that anybody competent would do, and hardly a new approach to building startups.)