That number seems wildly off. Facebook's annual revenue for 2020 was $85.97 Billion[1]. With 2.8 Billion monthly active users, they'd need to charge $3 a month to exceed that number.

[1]: https://investor.fb.com/investor-news/press-release-details/...

In the US it's much higher. Many users provide practically no revenue to FB (presumably FB wants the growth for the future).

https://www.adexchanger.com/platforms/facebook-made-almost-2...

Found the original article, I hope this helps :)

https://techcrunch.com/2018/04/15/would-it-make-us-love-or-h...

Thanks for digging it up! It did help. As Slymon99 had pointed out, Facebook doesn't earn the same amount from each user. Something I hadn't taken into account.

it's from their quarterly financial reports. rough estimate. for developing markets they generate about 2$ per user. and in developed markets like $7 per user.

When Facebook bought WhatsApp for 20 Billion USD, WhatsApp had about 1 Billion users, or slightly less. So that's at least 20 USD per user that Facebook paid.