This is a very clever platform play. If you make Siri / your mac the central access point for all AI related workflows and make models interchangeable, then Apple has a huge weapon in the AI race.
I don't disagree, but I do feel the need to point out this was not Apple's plan A. Luckily for them they have so many tools and options at their disposal, that they are able to massively fail at developing their own models and still end up in a good position.
So many other actors in the industry would have just doubled down and follow the race to the bottom