Facebook/Insta may require payment on iOS 14.5 unless you give them your data
imore.com
imore.com
Making FB/IG paid would either be the final nail in their coffin, or just make them not-pointless. So it's win-win.
Sadly I suspect if you ran the numbers, you'd have to charge more like $80/month to fully compensate them from lost revenue. Only the richest users will pay, and those are the most valuable users.