More and more the world is turning from a traditional economy into a new attention economy. This remediation is a play on the attention economy. Hopefully for obvious reasons. The heads of the silhouette represent different groups that trade in the attention economy, such as social media platforms. Their suggested dynamic also implies the interaction between the groups.
The title Nice Niche refers to the niche each platform uses to attain and sustain attention to feed the attention economy.
This blog by Lexie Kane gives more information.