For instance, when Apple Maps uses user devices to update it's map data like Waze does:
>“We collect data — when we do it — in an anonymous fashion, in subsections of the whole, so we couldn’t even say that there is a person that went from point A to point B.
Neither the beginning or the end of any trip is ever transmitted to Apple. Rotating identifiers, not personal information, are assigned to any data or requests sent to Apple and it augments the “ground truth” data provided by its own mapping vehicles with this “probe data” sent back from iPhones.
https://techcrunch.com/2018/06/29/apple-is-rebuilding-maps-f...
It also enables Apple Ad tracking by default on iOS / iPadOS so please don't mix Apples' marketing with actual state of things in the world :/
Edit: Also, this is a lot of jumping to conclusions, Google can be used on any device, if Apple wants to compete, it will be usable on any device.