I've got Google, Apple, and Microsoft phones around, but none are set to answer to wake words. Cortana on my laptop is as shut-off as possible. They all need to be manually-initiated. Transmitting voice without taking a direct, physical action is basically where I draw the line. After all, typing something into a search engine needs a sequence of specific actions. I think that the extra barrier provides the psychological comfort I need.
It's easy to sound like a luddite nutter worrying about some vague conspiracy. On the other hand, it feels like a lot of companies are getting good practice at boiling frogs, slowly re-framing what most of society thinks of as its comfort zone, concerning technology like this.