We hear a lot of breakthrough-sounding news about novel methods of constructing concrete buildings - 3D printed, inflatable-formed, etc. - claiming to "solve ho

We hear a lot of breakthrough-sounding news about novel methods of constructing concrete buildings - 3D printed, inflatable-formed, etc. - claiming to "solve housing" and "be able to give all of Humanity a house". But I don't understand what problem exactly are these technologies trying to solve: - Is there anyone in the World without (quality) housing, that can afford the concrete itself but not the labor and the cost of traditional methods to construct with it? Curious to hear your views / insight from this field. Thanks!