> Apple's silicon enables them to run incredibly strong models locally, fully offline. This is a huge win over competition that needs clients to connect to a network-connected GPU farm.
The competition has already racked up that win.
Google's hardware is just not as powerful. The Tensor G3 is far less capable than the A16 let alone the A17 Pro or M4 chip that powers the new iPad. Gemini Nano is a tiny model with limited applications. On the page you've linked, it seems like it's mainly used for text summarization, autocomplete, and various image features. It's not used for the Google assistant, likely due to the complexity of that task relative to the strength of the model.
Apple's hardware could run more powerful models that make assistant a first-class citizen. And as another poster mentioned, Apple does not have the same incentive structure as Google (which always has to keep their ad revenue business in mind). Apple would happily offer an all-in-one, does-everything assistant to their users, if it were good enough to compel sales. Google likely would not, but would rather bake integrations into their other products in order to "augment them with AI" while preserving their revenue model.