Earlier quoted context omitted.
There are folks like us working on this: https://www.cipheredtrust.com/ The trick is a scalable means to do identity verification on the internet...basically a way to do it that preserves user privacy and security and it is dirt cheap so everyone can leverage it.
I'm curious about something... I've seen reports that when places started using Facebook comments, they found that the lack of anonymity didn't prevent trolling, in fact, it made everyday people more hostile. Is it just about identity? Would that do anything more than just removing the occasional death threat, instead of actually addressing the more pervasive trolling?
One way to address this problem is to give service providers an easy way to enforce their terms of services. This would have the effect of also making those service providers honest, in other words if you claim to want to create a welcoming space for all your users but you refuse to take effective actions against those who violate your terms then your hypocrisy is laid bare...Today twitter can claim they can't verify everyone's account, but if that was not an excuse anymore, then they'll have to effectively deal with those who violate their policies even if it means losing certain users.