In TWD scenario, how will the society ensures safety and security? I think, that would be the biggest concern of the population as the centralized state has created that safety(?) net till now.
It would be a fascinating experiment, of course. Let's see if we can witness a solution in between for the transition where two systems collide with each other. El Salvador is gearing up for that centralized and decentralized collision.
How does it ensure it now?
Nothing stops organizing what we have now, it is just reached by consensus, rather than dictation and tweaks can be made at the local levels as required.
Social rules exist but does not interfere with the rewards and punishment mechanism. Yeah, may be the social decision making which is practiced throughout traditional societies.