Facebook and Google likely are responsible for Europe’s somewhat draconian GDPR— a legal attempt to regulate an unregulated industry responsible for collecting personal data from unwary citizens. Facebook tracks you online even if you don’t have a Facebook account. Google tracks you even if you don’t use Google or the company’s many free applications.
What about Amazon?
Amazon’s Echo listens all the time, then interprets some of what it hears as a query or command, and then takes action. When it works, great. When it does not, what then? At some point in the future these always on devices may be very good at recognizing specific voices and context, but it’s obvious we are not there yet.
Siri doesn’t do that.