I disagree...the killer app is a smart speaker (i.e. Amazon Music + voice control). That in an of itself is pretty useful, especially when you can get a reasonably good one for under a hundred bucks now.

Outside of that, Alexa isn't the platform the industry thinks it is but rather the equivalent of the touch screen on a smart phone. It's another form of input.

There needs to be much better and more seamless integration with 3rd party apps for it to really be useful.