* Clean energy, thanks to the same weird heat pit the Oracle Machine sits in. It's not the cause of the heat, but it's powered by it too.
* Land. We can keep reclaiming this empty planet just about forever.
* Organic materials. Neena's bioreactors are phenomenal for this, even if things come out homogeneous. Food isn't a problem, as long as you don't mind a lack of variety. But the city has enough farmers and foodies that there's both a demand and a supply for hand-grown stuff. (2/?)
…We don't have the level of skills or talent that a planet of billions would. Luckily cross-world bandwidth is cheap, so we can keep bringing in books, movies, video games, and whatever else we want from places with more population than ours. I'm glad for the Polywood studios, but they're small-time compared to the kinds of globe-spanning industries I've seen in other worlds.
The official server of the City of Elseways.