The county's geography isn't well suited for expansion - much of the western portion close to the city is already developed save for some slivers on the boundary with Weld, and the eastern portions of the county closest to the other developed areas are either occupied by holdings like Rocky Mountain Arsenal and DIA or are close enough to the airport to be ill-suited for profitable development. Arapahoe actually still has room for growth because there's some area south of Aurora that's being developed like crazy right now.
I’m curious what’s a few articles that you’ve gleaned all this from. The stuff about the cities too, I find it weird how overemphasized swing voters are on here, it seems to be mostly growth, stagnation, and engagement. Which the third I think is the most contentious as to what increases or decreases it, and often the argument over engagement is the least engaging thing that you could possibly think of ever participating in ever, especially between people who are already engaged