The tiny house they have a gallery of is aggressively ugly, with lots of bizarre curved walls seemingly just to demo their method. And the shelves and fixtures look precarious and unsafe, straight out of Arrested Development. Given the build quality, I'd be afraid the roof would come down on me if I sneezed.

I have Also heard of https://www.14trees.com/ and terran robotics doing this...

Edit: I imagine though, that in locations where building is regulated under the international residential code. There has been less investment, it only in the last few years added an appendix for mud/cob construction... So you can add regulatory cost on top of the actual robotics involved.