I'm not sure a robotic bricklayer is going to open up construction to anyone who doesn't otherwise have expertise in the area. You still need design/engineering/permitting etc. The robot just replaces the grunt work.

aaS means you don't even rent them, you just pay someone to come and lay a certain number of bricks by any means necessary.

Airplane engine manufacturers retain ownership of their engines, and sell kilonewton-hours to airlines.

Those have existed for quite a while now. For smaller projects it is cheaper to get a human.

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