This sounds like conjecture from someone who hasn’t worked in construction or automation. I’ve worked in both. Problems generally seem much simpler when we don’

This sounds like conjecture from someone who hasn’t worked in construction or automation. I’ve worked in both. Problems generally seem much simpler when we don’t have much experience with the nuances and details of execution. Some tolerances are forgiving (like framing, which can be corrected by a finish carpenter) and other systems are much more difficult. Both take some level of AGI to problem solve that comes in the form of a human. That's why there are "design" drawings and "as-built" drawings that (in my experience, at least) never match. I'm not saying its impossible, but I think the marginal costs are too high to replace what we already have. In addition, society has been moving towards individualization since the 1980s. We aren't in the Henry Ford days where people are ok with "any color of car as long as its black." People want individualization when it comes to their homes as well, and that lack of standardization makes automation more difficult than building a modern Levittown with robots.