Re: Takedown doesn't work
Yep, that's about the size of it.
It all comes back to the social networks not wanting to know who their users actually are. They make a lot of money out of users posting content that, really, they shouldn't. Users only post it in the first place because they know that most of the time they can get away with it, even for stuff that is criminally illegal (harassment on Twitter, terrorist material, paedophilia), not merely copyrighted.
If the social networks made users hand over proof of legal i.d. (for example through a financial transaction), then a whole lot of illegal and copyrighted material simply wouldn't be posted in the first place, thus removing the bulk of the problem. However they know that a lot of people just won't bother using the networks in the first place. Pay Facebook for the privilege of them knowing from exactly who they're slurping? No thanks. And then their business goes away. The free to use spontaneity of it matters a lot.
However, if they stopped slurping, and charged a small fee (like WhatsApp used to), actually offered a good service, it might work. It might be a better option than actually being held responsible for the illegal and copyrighted material users post...