honbeee t1_j8eraip wrote

If the materials were gathered in space, they would need to go back down to earth in order to be made into the parts of an arcology that would then be assembled in space.

The cost of moving that much material from Earth into space would be immense. If I were to guess, it'd probably be more likely that we'd need to build factories (or whatever means of production is necessary) in space. Factories on the moon