I would add startups to the list in addition to the more explicitly negative groups that you mention. There's a tremendous amount of both reputational risk and technical/organizational inertia to overcome in Amazon overhauling Alexa to use LLMs for responses, but much less for a new startup because they have far less to lose. Same for Apple with Siri, or Google with Google Assistant. I expect that we'll see exciting changes in these products before too long, but they're inherently going to be more conservative about existing products than new competitors will be.