Barca has allies who can protect Rettleville, who might also be capable of supplying it with food. That way, while Rettleville is essentially empty of Barcan facilities, foreign aid can keep it alive. That should be the essence of a colony, you know. The British didn't stay in America for almost two hundred years just because they thought it was fun, yeah?
Foreign aid keeps us alive. But after almost 100 days still not being able to have at least one recruitment centre of your own and a blacksmith. That is the bare minimum any realm should have.
If you aren't using a building, it is fair to assume that no one is up keeping it either. Similar to decrepit unused buildings in almost any city in the world. The game is assuming that the production of the region is being put to other uses, and as no one is doing building maintenance, the building is decaying. Pretty simple.
We are using it, only due to the lowered production, we do not acquire new recruits at the same rate as other regions/realms. And while the building exists, we are paying for its maintenance. If there are not enough people to maintain the building, how could we have constructed it in the first place?
