Apple's already shown they don't like this behaviour with their randomised MAC addresses in iOS 8+.
And elsewhere in the thread people called out the fact apple had already introduced support for ad blocking. So Apple’s privacy-positive posture was already in the air.I think there is a sense in which privacy was already a differentiator for Apple in iOS (as contrasted with Google’s motives in android in particular of course) - so this did feel like a not completely implausible way they could go to double down on that differentiator.
Apple's rift with Google over user data collection in Google Maps goes back to 2009 when Google held Apple to ransom for the user data in return for turn-by-turn directions. Apple refused and started building their own maps service, buying Placebase in July that year.
http://allthingsd.com/20120926/apple-google-maps-talks-crash...
By making it a feature for paying subscribers only, Apple probably hopes that their solution won't be interesting for criminals. (Apple will likely cooperate with law enforcement)