Thats the problem. I wish people would care more about their data. Lots of us who build stuff are more aware of how stuff works and the repercussions of putting data up just once.
This is most valid, data should be centralized, not distributed and not in the hands of facebook.
Imagine that there would exist a website that contains all your personal data with 1 password, websites request access to a part of that data and if this website also actively checks that it is valid data that the site is requesting to function, I would pay for that.
that's the beauty of it, once they've started providing data and build contacts using the service, you can require more identifying data and they will provide it not to lose what they already invested.
Even threatening to lock them out of their data will work.
It's a common escalation in scams and emotional abuse.