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