Here’s an interesting paper on the political and economic future of space mining. It begins with a survey of the current state of affairs. This alone is worth reading. There’s a lot going on! It then details a simulation exercise used to explore the ramifications of space mining for the Earth economy. Finally, it analyzes the insights gained from the simulation.
The focus is on mining of near-Earth asteroids with Earth-return of materials, but the issues discussed are certainly relevant to the development of colonies on Mars.