This sounds like the creepiest tech product you could put in your home: an internet-connected microphone that can "hear you from across the room". Love the slick design, but I'll pass.
Being far from an industry expert, it seems to me that Amazon just at least wants to try to get some smart device of their own into your proximity.
Google has nest and android phones.
Microsoft has XBox (also voice activated and motion-recording) and band (with GPS) and windows phone.
Apple has iDevices.