Building houses in factories doesn't really solve a big problem. We're actually really, really good at building on-site. Just look at the experience of Factory_OS and their building that was "built in 10 days"[1]. While it may be the case under a narrow interpretation, it's also the case that the project spent a year in site prep, 5 years in planning and permitting, and six months after "building" it they are still detailing and finishing and are another 6 months away from occupancy.
The second sentence of your linked article says that it was pre-assembled and just needed to have the pieces fitted together on-site. It also says constructing it normally would've taken a year
My apologies, I thought you were making a point that building is fast even without pre-assembly in a factory. I see that you actually mean that the everything else takes several years, no matter how quickly the building goes up. Sorry for the misunderstanding!
> The Dymaxion House was completed in 1930 after two years of development, and redesigned in 1945. Buckminster Fuller wanted to mass-produce a bathroom and a house.
https://factoryos.com/press/housing-development-erected-in-w...