Clearly Amazon is tryng to build an eco system for Alexa.
But wait. Does Alexa really need an eco system around it? How big can it get? Developers wont give much attention to this new gadget given XBOX, PlayStation, Wii, Android, ChromeStore, Fairphone, Windows Apps Marketplace, iOS, Android Wear and countless others are wooing the same developers to use their SDK to write apps or them. And all those eco systems are BIG plus they have a bigger potential.
Lets have a followup blog on this after an year to see how far it went.