Storing the data no, but text output as you’ve mentioned, or even passing it into some algorithm that update your profile with some signal that “may be interest

Storing the data no, but text output as you’ve mentioned, or even passing it into some algorithm that update your profile with some signal that “may be interested in...” is entirely possible with minimal data requirements. And I’m not saying Google or Amazon are doing this today. If not then it may be one bad earnings call away for some engineer to say “well....we could...”. Anything is possible in the pursuit of profits. I’d Google is willing to buy users offline credit card transactions to link to their profiles, it’s clear they will slurp up all data available for them. Why not that listening device in people’s home? “Overheard user X saying they signed up at google-ads-customer.com” “overheard user Y saying google-ad-customers service is fantastic”