Well, Google paid MasterCard to get the raw data feed, perhaps FB did as well.
https://www.bloomberg.com/news/articles/2018-08-30/google-an...
Re:Apple Robbed the Mob’s Bank
by TYPE_FASTER on Wednesday May 12, 2021 @11:59AM
(#27131819)
Yes, FB works with CC companies to buy that data.
And also off-line data collection. Do you have a loyalty card for some store you go to often? There's a decent chance that data ends up with Facebook.
I'm frankly a little surprised that Facebook didn't follow Apple by releasing a credit card.