A blockchain is just an infrastructure on top of which you run your business logic. In a sense, it's similar to what AWS would be in a centralised world.
So basically, you can add whatever registration, moderation, etc. logic on top of your infrastructure layer, whether it is built upon a blockchain, AWS, self-hosted or whatnot.
What blockchain gives you is something distributed, battle-tested, and some form of economics between infrastructure providers and platform users.
You can still decide to mimic existing business models of, say, Google on top of it. Give users unlimited free tokens on this blockchain if they provide you read access to their messages. Of course it seems outrageous stated like that, but it's pretty much the same business model than Gmail at the end of the day, with the advantage that users not willing to share their data can just buy usage tokens if they prefer.
A blockchain is just an infrastructure on top of which you run your business logic. In a sense, it's similar to what AWS would be in a centralised world.
So basically, you can add whatever registration, moderation, etc. logic on top of your infrastructure layer, whether it is built upon a blockchain, AWS, self-hosted or whatnot.
What blockchain gives you is something distributed, battle-tested, and some form of economics between infrastructure providers and platform users.
You can still decide to mimic existing business models of, say, Google on top of it. Give users unlimited free tokens on this blockchain if they provide you read access to their messages. Of course it seems outrageous stated like that, but it's pretty much the same business model than Gmail at the end of the day, with the advantage that users not willing to share their data can just buy usage tokens if they prefer.