This appears to be done without mortar, on a level surface, inside a warehouse. I understand the allure, but 300 blocks an hour is the equivalent of 2 guys wit

This appears to be done without mortar, on a level surface, inside a warehouse. I understand the allure, but 300 blocks an hour is the equivalent of 2 guys with some skill, and they'd be able to do it with mortar and rebar in an outdoor setting. Many of these technologies will only ever be profitable in a small handful of Western nations - building-block log homes, this type of masonry, foam formed concrete. Advances in building technology are about balancing pre-site prep with on-site flexibility. Stick construction is an advancement over timber construction partially because timbers are expensive and partially because it's much more flexible (and you can use smaller trees, and a bunch of other things). We use cinder blocks for construction now instead of bricks because it's a lot easier to transport large blocks in the automobile age, etc. A good advancement in building construction reduces labor cost with either new materials, new systems, or more pre-site prep. A good example of this would be SIPs, pre-site cutting of lumber (think an Ikea house), and integrated sheathing systems like the ZIP system. Replacing very flexible human beings with expensive equipment (that needs a human being to watch it anyway) tends to not save all that much money.