Well not in bulk to its advertisement competitors as you seem to suggest. But as a different revenue stream, data collectors sell the collected information. Don't be naive, of course they do, first customer are governments.
All corporates sell your data. You're a fool to think otherwise, data makes dosh, and you can sell any data for a price.
Data is a commodity.
There are current ten plus folk in the subway carriage I am sitting in right now. Toss me £10 and I'll give you a dataset of ten people of what colour tops they're wearing and what brand of shoe and colour.
the brightdata link is a data set scraped from Facebook, not sold by Facebook
Cambridge Analytica was the same thing, scraped from Facebook by people who voluntarily (perhaps ignorantly) gave their data to quiz apps like "what kind of horse are you?"
Facebook does not sell user data, and it never has
its not a misconception. As an advertiser, I can go use meta's tools, target people specifically, and show them ads on meta's platform. While i don't get the CSV dump, but if i can target people with my message, its the same thing. Meta keeps the data AND the distribution. Data brokers have the data but no distribution of attention for that data. Newspapers have distribution but don't have the granualar data for direct targeting.
There are many, many use cases of having a CSV dump of the data, but in reality, all of it boils down to either reselling the data, or marketing a product to the demographic in the data.
The 3rd use case is that of palantir but let's not get distracted.
So, meta is not selling data is like saying netflix is not selling movies (its actually buying them). Technically true, but a shallow understanding.
Really do you care that your daughters are being advertised beauty products at the exact moment that they delete a photo because it's likely that they're feeling low self esteem at that moment? Because that's a service that you used to be able to buy from Meta.