You are still missing the point and I think you have a persistent mental block. You are overthinking it. It's not that complicated.
The article says that Apple is partnering with OpenAI. It also says that OpenAI runs on Azure infrastructure.
Whatever they negotiate, the deal is intended to be a win-win for both sides in the long run. Obviously both sides are interested in making money. The article mentions future revenue sharing agreements and getting more users to subscribe to the paid ChatGPT.
Any increase of OpenAI/ChatGPT usage means an increased usage of (and dependency on) Microsoft/Azure infrastructure. I don't understand how this is so complicated to understand. OpenAI runs on Azure and more OpenAI usage/dependency means more Azure usage/dependency. Microsoft increases their cut of the AI market share as more Apple users use Microsoft infrastructure and of course they will make profit from that. None of these guys are doing it for charity.