All it takes is one major "trust incident" and accompanying press coverage to destroy "brand loyalty". There are still too many folks who see these for what they are: remotely-controlled microphones. That is why Amazon is asking for the wording of the article to be changed. Otherwise why would they care, if the manifest destiny you describe is true. More likely, no one can be sure yet whose normative behaviour will prevail: those welcoming the microphones or those rejecting them. It is what it is: an internet-connected computer with the mic always on. Eventually the Jetsons novelty wears off. Imagine every product with an embedded computer connecting to the internet without any user intervention and having a built-in mic always listening, purporting to be "voice-operated".
One can only speculate as to what sort of incident would threaten brand loyalty; no one knows. All we know is there is some history of opposition to mass surveillance.