iOS8 - Randomizing Mac addresses

Is it for privacy reason or is Apple expecting everyone to buy this information from them, instead of collecting it free.


When iOS 8 devices look for a connection, they randomize that address, effectively disguising any trace of the real device until it decides to connect to a network.

The link below has more information:-
http://www.theverge.com/2014/6/9/5792970/ios-8-strikes-an-unexpected-blow-against-location-tracking