What is the point? iOS will run a local model for requests that involve personal context and pass requests off to a private cloud instance for requests that are

What is the point? iOS will run a local model for requests that involve personal context and pass requests off to a private cloud instance for requests that are too complex for local inference. For non-personal requests OpenAI or some other service is invoked. Apple isn’t paying OpenAI. Where is the ‘Apple buying their tech’ part in this?