We had it. Reddit should have just been NNTP. You can't "monetize" NNTP though.

I used to be a lot more enthusiastic about decentralized protocols. I don't know how to solve the AI problem though. I think the Internet as we knew it for assumed-human interaction is dead, and the surest way to believe you're interacting with humans now is through existing trusts, such as accounts older than AI and highly-moderated forums, and to charge for access.