IMO, too far out for this discussion to matter. Our primitive chemical rockets are absolutely nowhere close to facilitating routine trips to the asteroid belt, and we probably won’t get the sort of rocket technology that would, for at least decades, so that’s around late 2040’s (very optimistically), to 2050s at the earliest / 2060s? Yeah, very far out.

I’ve noticed that a lot of the things debated about in futurist circles are either a very long time away, or probably beyond our lifetimes. It’s a shame.