The bits of home printing that a machine can do aren't the hard bits, except for very specific buildings where the wall shape is odd, which there's limited dema

The bits of home printing that a machine can do aren't the hard bits, except for very specific buildings where the wall shape is odd, which there's limited demand for. You end up where the choice is a complicated, failure-prone robot in a hostile environment vs a human or three who can do the job quicker once you factor in machine setup.