If you’re suggesting there’s some sort of data- or usage- mining of Spotify’s app and/or app integrations with the OS going on, you’re going to have to provide much more evidence than just the allegation of “Apple can see Spotify’s data”.
The device might be able to see “Spotify’s data”, but the closest thing Apple-the-company has to “Spotify’s data [on iOS/macOS]” is likely to be device/customer profiles on who downloads the app from the App Store.
And I’m sure the amount of data that Apple has on Spotify and their business and marketing strategies from non-device sources is both vastly superior and vastly more than what they would get from device-based information.
The device might be able to see “Spotify’s data”, but the closest thing Apple-the-company has to “Spotify’s data [on iOS/macOS]” is likely to be device/customer profiles on who downloads the app from the App Store.
And I’m sure the amount of data that Apple has on Spotify and their business and marketing strategies from non-device sources is both vastly superior and vastly more than what they would get from device-based information.