In the long term we can hope for this. But simple logistics say it'll be decades at least before we on Earth will possible see benefit. Potentially only when th

In the long term we can hope for this. But simple logistics say it'll be decades at least before we on Earth will possible see benefit. Potentially only when the upper crust's resources start to draw thin will it really kick in, based on what I reckon about the prices of returning materials in bulk.