Their ALL feeds will only have their individual servers unless their users go to the other instances and subscribe to communities. And only the communities they subscribe to will be fetched. But they’ll be fetched for all users on your instance with only one sub.
Is there any functional difference between 4 people funding and running 1 instances vs 4 people funding and running 4 instances?
Scale that to a few millions on 1 instances and you get Reddit, so there is at least a difference in terms of decision making
Their ALL feeds will only have their individual servers unless their users go to the other instances and subscribe to communities. And only the communities they subscribe to will be fetched. But they’ll be fetched for all users on your instance with only one sub.
(Technically they’re pushed and not fetched.)