Construction is actually one of the few sectors that hasn't become more productive per employee over past decades. Buildings have become vastly more complicated but there's comparably little automation.
Not sure whether this is more common in the US these days. I know for a fact that a lot of buildings in China are constructed this way.
It seems we've made amazing progress on the "software" side of AI, but are still very far behind on the "hardware" side, ie robots.
The main disadvantage about physical objects vs software is that physical objects are not as easily scalable and matter is generally more expensive than bits... so the economy of scale is harder to exploit. But give it some years once the marginal utility of software decreases to a point, I think people will divert more focus (and more importantly capital) on automating hardware stuff.