Next they need to print them using a compound that can be vaporized when sprayed with a certain chemical. That way, when you move out, the next guy can just vaporize the house and print a new one with a layout he likes better.
Basic 2 x 4 construction is not difficult to learn, can be done by one person or two, is satisfying work, and lends itself to forming interiors the way you want them.
Example: I build a home for myself, using a framing crew. After the home was being lived in I decided to add an upstairs laundry. Framing in a 3 x 6 closet and plumbing it up was actually easy and satisfying. I'm getting a little too old to do it now, but I always wanted to have a 3D built shell with two major partitions, then do all the internal walls and such myself, have trusses set for roof and hire a crew to roof it all while I'm framing up the interior.
I also added a second hot water heater, under the house so bathing was on one heater and kitchen and laundry on the other. Ran conduit from garage power boxes to the basement area for the 220 amp electrical.