> No ... not like these. I can control any communication through these.

How do you control what other people say to you through emails they send you to your Gmail account?

I get the point you tried to make: Alexa is a listening device customers intentionally plant in their home. But if you do care about corporations listening in, you're missing the forest for the trees. Gmail alone is far more incidious and has the potential to reach far more personal information than Alexa.