Earlier quoted context omitted.
I blame Star Trek. Simply speaking out loud to ask the computer anytime something was needed, it seemed like magical tech. We just didn't anticipate the companies and extra consequences that would come along with it. I would love to see a parody of Star Trek where all the tech is run by an advertising company exploiting all the crew members individually by capturing all their private data around the clock.
I think it looks comfortable in the Star Trek universe because it is implied that voice activated stuff is controlled by a super-AI. That is, the AI won't give humans access to the audio. Which in turn means we are going to have a super-AI that can restrict our rights and itself have access to vast amounts of information about us. I.e. Star Trek is a society essentially controlled by the AI, as it will be above us.
I mean, if you don't trust the computer to look after your interests with regards to your voice interactions, why are you trusting it when it also controls life support and airlocks? ;)