Yes! 
Then let users publish the same event in multiple communities at once and you have all incentives aligned. 

- Creators can target their content to multiple overlapping communities and handle the monetization and conversation in one place. 
- Community admin have a paid job: curation.. Their tools are their price list, their guidelines and their delete button.
- Readers and Members get high signal around the topic/interests the community specialists in and cam focus their attention in that, while still being able to organically discover other communities/content in the reply section.