I agree, I think the two things that killed Flash were "Steve Jobs" (aka - a lack of foresight around the explosion of the mobile market and no competitive offering in the space), and the continued treatment of security as a technical debt item rather than a differentiating purchase distinguisher that buyers were actually concerned about. That is, I don't think Adobe correctly recognized that corporate buyers would start buying Intranet applications that were not built on Flash/Flex specifically due to security concerns.