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.
But did you notice how many construction workers are shown there? You can certainly build faster with prefab, but it's still a very manual process, both at the factory and on the construction site. And anything afterwards (wiring, HVAC, painting) is also nearly 100% manual labor.
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.
I'm aware it's still a very labor intensive process. But there seems to be great potential for improvement with Tesla-esque automation processes if the capital investments are worth it.
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.
