My guy, it won't be aristocracy. It's gonna be rampant space imperialism, you know, like we do every single time we find resources in mass ripe for the taking. Hording resources, and controlling planets in the solar system is gonna end up being their goal. They will have no interest in a project that won't make profit for 200-500 years. This ain't months without profit, this is lifetimes of investment with no gaurentee of a return (because we don't have a clue how possible this really is) the conquest of the solar system is far more likely (and we've already started it) than an interstellar one in the near to distant future. And money is already being made in it