Poured in place concrete may be a more efficient
method for automation.
I don't know about in your country, but in the UK there was a period after the second world war when Brutalist architecture was in vogue with town planners.
While it produces occasional gems, a lot of the structures and towns rebuilt in this style are unpopular.
I think you'd have a much easier time selling houses that look just like normal houses, rather than selling revolutionary all-concrete houses no matter how efficient they may be to build.
Indeed. The UK had all-concrete "prefab" houses made of reinforced concrete slabs joined together. They had two critical problems: firstly, if water gets into the reinforcement it rots from the inside out and cannot be fixed without demolishing the house. This can make them impossible to mortgage and insure. Secondly, due to single skin they leak heat very badly. Some have been retrofitted with brick second skins for this reason.
While it produces occasional gems, a lot of the structures and towns rebuilt in this style are unpopular.
I think you'd have a much easier time selling houses that look just like normal houses, rather than selling revolutionary all-concrete houses no matter how efficient they may be to build.