Earlier quoted context omitted.
Everyone, including headphone manufacturers, are trying to get in on the gold rush that is turning their customers into fonts of personal data that can be sold to the highest bidder.
I see this sentiment mentioned a lot, but who actually pays for this data? Is there a company I can call that will buy my amorphous "user data"? What are their names?
I worked for one for a brief time ~15 years ago (at the time it wasn't obvious what they were doing).
It's the kind of people that would have sent mass mail junk 60 years ago (and probably still send it today!).
Heck, you can see them even on this site, check for some marketing optimization technique articles that sometimes pop up here.
Even a good chunk of our fellow HNers are spammers.