First, although the scene gives the impression of being similar to an airport, we see no evidence of air travel, not even contrails in the distance. Since they have the ability to travel at high speeds, judging by the ground-based rocket-powered transport seen, this is not because of a fuel shortage. We're on a planet with either thinner air, higher gravity, or both. The lack of redness near the setting/rising sun also indicates thin air.
Second, they're using rockets instead of either locomotives or electric power. My guess is that rockets might call for less steel for a given power output than locomotives and less copper than electric power. It looks like we’re on a world with a heavy-metal shortage.
Third, they apparently use domes for routine buildings. The towers in the distance are for a display of conspicuous consumption on the part of the upper classes. There are a handful of towers nearby for middle management, but not that many of them. This might indicate frequent use of materials that are stronger in compression than tension, i.e., ceramics. This is another indication of a heavy-metal shortage.
Fourth, there is no fuel shortage. They're able to use a rockets for ground transport which probably requires lots of energy. Since it's doubtful if a world with thin air would have an abundance of fossil fuels and it's doubtful if a world lacking heavy metals would have much uranium, they're probably using nuclear fusion. They might have an abundance of deuterium and lithium.
It's amazing how much one can deduce from just one picture.