I don’t think the user data where OpenAI makes its money. It’s the $20 a month GPT Plus subscriptions.
Apple announced that Plus users would get more functionality. Also, OpenAI is basically only limited to collecting data from queries that the user explicitly says it wants to sent to a 3rd party model. Each GPT4 query prompts the user with “Do you want me to use ChatGPT to do that?”
Apple’s not really in the business of selling data, but they are famously and infamously in the business of selling subscriptions to shit.