Totally agree, with urbanization continuing we need to build higher. The perfect example for this is Berlin. As the capital of Germany, it is the largest city in terms of area and population. When walking through the city you will see almost no buildings taller than a few stories.
I guess the technology to build these small homes for such a low price it rather going to be used for second homes in tourist areas.
RE: $10k Home Built in Under 24 Hours Using 3D Printing Vulcan Printer