Ya, that 10 billion is irrelevant really - you are not looking for work from the general population, or corporations based on the planet surface. You are looking for work from small/medium political factions who are all fighting with each other for control of a station/system. Factions who will be offering missions based on their current state and place relative to other factions - which makes perfect sense in the context of who we are within the galaxy.
10 billion people is irrelevant. That's funny. So despite the fact that there is a HUGE population, where people want food, drugs, slaves, assassinations, etc., you can't get a job doing anything but source and return. This makes no sense on its face.
The Mission Board fails to meet the core game premise.
Only for the 2.8%ers.
Now that is truly funny. A totally different topic of course.