More like all the people from a particular community write to one or two relays plus randomly to some public ones. If you want the best content for a particular community you’ll subscribe to one of the ones that’s favored by that community. If you want to be seen and heard in that community you’ll pay for those relays.
Discussion
Ah right, sure. Relays hold the power, might as well structure the community that way as well. Still, I don't think public relays are a dead-end, they just need better organization.
Public relays are important. They’re how you talk to random people outside your community. But they’re likely to purge your posts after a while. Community relays are home base.