Yes it is part of the equation. Probably need to invent better concrete or a new concept first. But even more the way this has been handled, or rather not hand

Yes it is part of the equation. Probably need to invent better concrete or a new concept first. But even more the way this has been handled, or rather not handled. There is so much that can fail. All in all I doubt it will happen soon. I remember a few years ago, SpaceX was selling seats for the mars mission. But maybe that’s just the Elon-way of doing things.