Your last point is sadly spot on. BTW Upcoming smartphones with Qualcomm chips will also have a always-on listening mode called "Snapdragon Voice Activation". http://www.qualcomm.com/media/blog/2013/02/20/snapdragon-wak...
P.S. Here are some voice commands for the Xbox One http://www.stuff.tv/news/computers-and-consoles/news-nugget/...