I'm working on establishing a new game with a multi-faction start (first time trying this) and it seems there is a behavior I have not previously noticed with financial centres. Do they provide wealth to all colonies on a planet? I have created 5 factions on Earth (conventional start) and given 2 of the factions 5 financial centres each, but after passing time for the first month, it seems that all 5 factions gain wealth from financial centres. Some more than others based on factors that I can't quite divine.
Is this an intentional mechanic of financial centres that I just didn't know about before a multi-faction start? Is there a different way of giving one faction an economical advantage?