While not my field at all, I would imagine that given the relatively generic character of the source material required for concrete it might be easier to find s

While not my field at all, I would imagine that given the relatively generic character of the source material required for concrete it might be easier to find suitable locations for extraction. Although I seem to recall reading about potential shortages for certain types of sand, so maybe I'm wrong about that. Generally speaking, whenever specific qualities of a raw material become linked to its intended use, the market becomes more willing to accept negative externalities in its procurement.