Posting/publishing content is like setting a stage for others to join. So content is just a precursor to real social engagement. It is the engagement that creates social intersection to dissect & disseminate the information. A community also builds through engagement.

Regarding monetary benefits, both are profitable. One is direct and the other is indirect. Most of the curators rally around trending posts. In that process, they also engage with the content, they also have their individual insights, agree/disagree, and also resteem to share it with their followers. And all these sum up to better content discovery.