A per-person charge makes free/volunteer-organized events largely a non-starter. Any charge is a huge friction for people signing up for something. And unless it's a corporate sponsored event (and often even then), the $5 or so per person who actually ends up attending is significant.
Probably people/companies will just depend on word of mouth and other channels to promote events and not depend on discovery through a specific service.
Probably people/companies will just depend on word of mouth and other channels to promote events and not depend on discovery through a specific service.