Doesn't mean you can use live data for tests. Should be opt-out by default, with the chance to opt-in if you wish to collaborate with your data.

People have never heard of ML. They think that there's a computer that listens to what they say, then does it. If they are interested in technical stories on tv news, they may think that what they say is sent to a computer at Amazon/Apple/Google/Wherever and the command is sent back; if they are not, they think that their phone is the computer.

I mean, we've told them that we're on the verge of AI (and to fear it), and we can tell a two year old to do something and they do it without having to hire somebody to help them understand us.

Apple pays real humans to enlist in research studies to collect data. That’s how they built FaceID for example. They have stated this publicly.

Serious question: how do you think Home, Alexa, Siri, etc were trained before coming to the market ?

Another serious question: couldn't you ask ME to fix the data every so often (like the "improve this traduction" feature of google translate) ?

The ethical way to do this is to pay a representative sample of your customers to come in and record their voice.