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You should temper your expectations: https://gizmodo.com/apple-iphone-france-ads-fine-illegal-dat...
France’s data protection authority, CNIL, fined Apple €8 million ... for illegally harvesting iPhone owners’ data for targeted ads without proper consent.
If ads are a small percentage of Apple's quarterly reports, that isn't sound reasoning; after all, they make a lot of money in general in a lot of areas.