In part, this is what Microsoft Recall is about: scraping end users’ data at will to sort and feed to its LLMs

That’s also what Google has always done. Want a large data set of emails? Look at our new free service, Gmail! Need a lot of images to train machine learning vision models? Check out our newest free backup tool, Google Photos! and so on. When they want one particular data type, they launch a free service that just so happens to collect this exact data type from millions of users.