(Thanks for the perspective, that was interesting.)
Btw, modular/semi-modular home construction is a pretty big thing here in Sweden. Seems like most standalone homes are built that way nowadays. I had earlier assumed it was similar elsewhere, but it seems like it isn't dominant in most other places.
I guess our horrible climate makes it nicer/more profitable to build modules in a climate-controlled factory than on a wintery/coldish/raining building site. Contrast that to e.g. California - decent climate all year around. I'm also guessing that our high taxes on work and a lack of a low-paid builder workforce also contributes to making automation of housing module manufacturing worthwhile.
See e.g.
https://www.treehugger.com/modular-design/sweden-they-are-bu...
(It's not just one house manufacturing company doing these, there are loads of them around the country; I think the typical size is a couple of hundred people. With lots and lots of automation. Not quite sure why large-scale consolidation hasn't happened yet - I'm guessing it's because these companies tend to be privately/family-owned.)
http://www.globalconstructionreview.com/trends/why-sweden-be...
"About 84% of detached houses in Sweden use prefabricated timber elements, while in developed economies such as the US, Australia and the UK, no more than 5% of permanent housing has any significant prefabrication."