There is enough foor for just about 5.000 people. If you split it to equal rations for 50.000 people, everyone starves to death sooner than later.
Fishing the waters around the ARK empty is a not very thought through option, because it will as well only be a temporary solution. Plus it will probably be already part of the 5.000-people supply.
The subgoal you're talking about is -basicly- already known. Though there is no actual number (and depending on seasons, there will probably be different ressources available), it is clearly not enough. Hence why there is an upcoming Civil War.
Also the original 5.000 people (which, I guess, are mostly members and or supporters of the Security-Faction) will have slightly more ressources, but they still have only enough to survive for a longer time than the Resistance-People.
If 50.000 people stay on the ARK, it boils down to a breakdown of the system.
Probably because over 20 years there will not much generation-change be going on.
Again, its the responsibility of everyone to keep everyone live. Both from a basic moral perspective and the perspective of genetic diversity being PIVOTAL to a species longevity against basic things like plagues and disasters. The amount of food is not known, or they wouldnt be fighting. Taking 5000 peoples food so 5000 people starve to death and 5000 other people out of 50000 eat is ridiculously [censored]. Therefore, i seriously doubt theyd know how much food there is. All the status-quo talk implies its just a institution handed statistic anyway. Also, again, it was a 5 star eco resort. So the diets were probably lavish, and if cut down and stripped could probably supply a much larger amount of people. Obviously there is much more food then needed to ONLY support 5000 people or the 45000 would be starving to death or emaciated, but the resistance are all super fit soldiers, which requires a lil protein. The gripe is the guest descendents are on ration and the founder descendents are not. So if anyone is starving why wouldnt everyone optimize their diet/lifestyle to help those in need?
Of course it's a possible solution.
Similar to what happens all over Africa right now, where the Western countries would not change anything if people wouldn't basicly start a civil war.
Thats a bit off actually. The only thing the people in those countries needed to do was express their feelings in the face of their repressive govts, Libya's the only all out civil war. The reason westerners arent involved isnt because we couldnt help, but because we've proven ourselves to be notoriously untrustworthy with intervention policies, and many americans still furious about the iraq as well as many middle easterners have been watching the US very carefully. Being the only clearly justified revolution and something people were able to form an opinion before US involvement (due to the tech revolution) we're just being careful about homeland PR and moving very slowly in a situation we did not ever anticipate.