As a point of reference, if you're in the US or Canada, Facebook would be losing money on this model, according to info on their investors' site [0].
0 - https://s21.q4cdn.com/399680738/files/doc_presentations/FB-Q... (search for Average Revenue per User)
Maybe this is an opportunity for a startup to create a paid social media platform?
Maybe this is an opportunity for a startup to create a paid social media platform?