Apple's product focus is on getting Siri to bridge your first-party and third-party apps, your 500GB of on-device data, and your terabyte of iCloud data with a nice interface, all of which they're trying to deliver using their own technology.

Having Siri answer your trivia question about whale songs, or suggest a Pad Thai recipe modification when you ran out of soy sauce, is just not where they see the value. Poor web search has been an easy critique to weigh against Siri for the last many years, and the ChatGPT integration (and Apple's own local prompt prep) should fare far better than that, but it doesn't have any relevance to "leapfrogging" because the two companies just aren't trying to do the same thing.