You oughta open a FB quarterly presentation some day, it is quite eye opening how off the charts they are in terms of user monetization. $20 yearly wouldn't cut it at all, in North America the average revenue per user (ARPU, trailing 12-months) is about $145 (yes, $145 * 253M monthly active users). It's not even enough to match the worldwide ARPU (about $29, for 2.6B users). The value FB extracts from it's users, particularly in NA, is simply astonishing, I'll leave you to Googling the ARPU of other web platforms to get an idea.

https://investor.fb.com/financials/?section=quarterlyearning...

I actually feel quite accomplished to be less than <50% off without ever having the slightest interest in reading their financial reports.

The where some numbers in 2016 saying that a US user was worth around $60 per year, EU users a little less (around $40). The users in the rest of the world is worth only a few dollars a year, if anything.

https://www.theguardian.com/technology/2016/jan/28/how-much-...

This! I have been trying to make this point for a while. I will be quoting this whenever I can :)

Maybe they could price discriminate based on how much you are worth in advertising.

And that's sort of the problem with chasing as much revenue as possible and is why capitalism has been in the crosshairs for conversations on equity as of late.

I think the idea has merit, a paid social media platform that fosters engagement with people you care about rather than driving "engagement" with the goal of more ad revenue.