Yes, we realize the various districts are separated among the haves and have-nots, but the technological discrepancies from district to district border on the absurd. When Katniss goes to the market in District 12, it looks like something straight out of the 1800s, with the most advanced piece of tech being an ancient tube radio someone hocks in the background. But, then we get a peek at the Capitol and the richer districts, and they have everything from holograms to those cool flying ships. It's the Jetsons and the Flintstones, in one convenient world.
Now, this is obviously a world with cooler, more advanced tech than we have today, but even if District 12 is poor as dirt, at least some of that would be reflected. Not to even mention how District 12 is the mining district, and they seem to be operating at the same level as guys digging for gold in the 1800s. Wouldn't it be infinitely more efficient to use some of that advanced tech to ramp up the mining operations?