Is it really top-down? The Innovation culture in an organization I mean. According to James Todhunter in the article here the organizations need to understand two principles - It is top-down, and well, it is really top-down.
Although I liked the article - I really disagree with the following statement "Culture begins and ends at the top". In my opinion, culture develops at the grassroots - it is the failure of so called management to understand the organization culture that we need to study and respond to.