Got the Amazon Echo and it's a nifty device. It works well as a smart alarm clock, music player, and general to-do list. You say either "Alexa" or "Amazon" to turn it on and then you just order it to either tell you the latest news, play your music list, or check the weather. It has changed the way I interact with my music player and alarm clock even though I have it for less than a month. From this experience, I can see how the Amazon Echo might become the hub for a smart home.
Last week, Amazon sent me an email about smart plugs and devices that can be controlled by the Echo. In other words, Amazon is guiding consumers like me toward updating my home to make it "smarter".
If every device is as easy to use as the Echo, then I think the smart home adoption rate will be even faster than the one shown on the infographic below (The chart is from Raconteur).