It was apparent on day one that the Echo was a much more compelling product than the Fire Phone:

  • The physical device (the Echo) was simply a conduit for Alexa, Amazon’s new personal assistant. And critically, Alexa was a cloud service, the development of which Amazon is uniquely suited to in terms of culture, organizational structure, and experience.
  • The Echo created its own market: a voice-based personal assistant in the home. Crucially, the home was the one place in the entire world where smartphones were not necessarily the most convenient device, or touch the easiest input method: more often than not your smartphone is charging, and talking to a device doesn’t carry the social baggage it might elsewhere…

Source: Alexa: Amazon’s Operating System – Stratechery by Ben Thompson