Re: How else are the US corporations and spooks supposed to harvest all your most personal info...
Not only MacOS. If you have an Android device, Google is always listening and the microphone cannot be switched off. See the comments here:
http://www.ghacks.net/2014/03/07/mute-microphone-android-device/
Other devices too.
http://www.usatoday.com/story/tech/columnist/komando/2015/10/02/3-gadgets-always-listening-and-how-stop-them/73191644/
Who would have thought that the population would not only invite mass surveillance devices into their homes but pay for then too!