One option is paid relay. Subscribers are paying for access to this relay, publishers publish only through this relay.
Discussion
I see 3 types of Persona's on social media. Content creators producing unique content. "Editors" that are retweeting or reposting with comments good content from Content creators. Consumers who read, watch, and listen good content.
I always wanted to build a product that would allow Editors curate the best content for their followers, get money from subscription, and give fair share from subscription to Content creators which their content has been curated by the Editor.
In other words, we have so much content that I would like to pay somebody to curate my content and that person would give some portion of that money to people that produce high quality content.
And I think Nostr will allow that.