This Economist article captures the true opportunity at hand -
"However, the exciting thing about the emerging world at the moment is a prevailing belief that even the toughest problems can be solved. And a similar can-do moment, in the late 1940s, offers a striking historical precedent for the application of mass-production techniques to housing: as American servicemen flooded home after the second world war to start families, Levitt & Sons built Levittowns at the rate of 30 houses a day by mass-producing the components in factories, delivering them on lorries and using teams of specialists to assemble them."
Can we do it again?