I think it's much easier for Apple to sort out their AI and add this to iPhone than it is for OpenAI to figure out an entire mobile ecosystem where Apple has a ~15 year headstart and use their AI in it.
I agree Siri isn't good, but adding good AI into the existing ecosystem is clearly where the market is headed, and I don't think it will be long before Apple gets there.
Cool but Im ready for something totally brand new (Apple is stale to me now) and Microsoft who owns 49% of OpenAI could make such a personal device as I mentioned for Open AI. Open AI would just brand it the GPT phone.
Further it should be web based not app based and Apple's money machine is way too tied to their app store to establish such a new personal device paradigm. Your assistant fetches everything from the web to show you, discuss with and or have you interact with.
With it web based AI helps the web thrive not kill it off as people are concerned with now.
I agree Siri isn't good, but adding good AI into the existing ecosystem is clearly where the market is headed, and I don't think it will be long before Apple gets there.