[Terabitten]

Wondering also what will the drywallers, carpenters, roofers, etc do when their jobs evaporate. I’d imagine the plumbers and electricians will still be needed but to a lesser degree.

So assuming 3d printed housing completely supplants "normal" construction (which I doubt for all sorts of reasons), most of those jobs will still be intact. There are lots of good reasons to hand drywall on the interior of a 3d printed house, and no really good reason not to besides aesthetics. You'll still need carpenters to put in door and window frames, do decking, flooring, etc. This particular house uses a printed roof, but most won't do that. They'll still have some kind of roofing.

[TonyinLA]

Door jambs and window frames do not require a crew. 2 guys on a SFR, done in a week.

Floors? 2 guys on a SFR, done in 2-3 days.

I somewhat agree with the drywall - some reason to install for aesthetics / have something to nail into for your pictures. Fairly expensive for that convenience. Haven’t been to one myself, but the vids I’ve watched are both with interior finishing [pre-fab] and plain concrete walls.