The amount and skill that exists in high end construction is crazy. Not just in the individuals but also how they work as a team. Also how few people are qualified and want to do the work. Half of his team are undocumented Mexicans that have been with him for over a decade. I won't even get into the risks and costs associated with that.
The work is hard, physical, requires precision and attention to all sorts of details while being creative and getting up really early in the morning.
Just to give you an example of how not automatable it is. $37,000,000 home that the entire building is clad in a bespoke red aluminum paneling that the architect designed. It doesn't fit in a repeatable pattern and each panel is between 3x4 and 12x7 feet. They need to be hung with a tolerance of less than an eighth of an inch on a cantilevered split level structure with some odd pitched faces. Any drift in the assembly will mean a later piece will not fit correctly and you might not find out until the end. If say a single piece got maybe dropped or run over by a work truck it will have to be custom replaced at a huge cost because the panels were made in batch, also this would effect the overall timeline of completion. The contracts you take with a job like this sometimes come with bonuses for finishing early and penalties for delays. The process to even get to build them is highly competitive as well.
Just to get this on the wall involves coordination to make sure everything is true and to spec as it gets to the skinning. Every variance effects your adjustments for hanging the clad. Sometimes with your own guys involved in the internals and sometimes you depend on workers you have nearly no control over. Either way you have to deal with and adjust.
All of this has to be done without trampling the feeder roots just under the soil of the 250 year old oak tree in the middle of the job site because it's irreplaceable and a couple desire paths can kill it inside a year after the job is over, cutting off 80% of the work area you have access to.
I'm not saying you can't automate a job like this, but we are so far away from being able to. It is possibly on an infinite horizon in skilled human labor.