Most people don't check their accounting settings, to see the massive amounts of data that Google is collecting on them or the amount of tracking they are doing. Even if a person adjusts the settings, its not really known to what extent the continual collection is actually mitigated or privacy is being ensured. To include users data being sent to 3rd parties or governments at Google's prerogative or their employees, or to the extent results and services are manipulated for Google's own internal purposes and benefit.