Assume a group builds a social network just like Twitter, but with verified users, actually verified, possibly via personal ID / passport maybe at the town hall, no alias allowed, but the legal name, people will know who you are. All publicly readable without account.
This would give politicians, companies, journalists and citizens a way to have public "conversations", near real-time news updates just like on Twitter, but without the huge amount of garbage that comes from bots and people eagerly destroying the public discourse. Illegal comments (my mistake, criminal content) lead to direct consequences, maybe also with the one of setting the account to read-only mode.