Sci-fi is rife with humanoid robots doing everything, while all customers want is specialized products that do one specific thing well and don't cost a lot.
Robotic lawn-mowers - considering there's such a huge market for it especially in the US, I'm surprised no one has come up with a cheap robotic lawn mower yet.
There was some rumor about iRobot coming up with their own lawn mower, but that was in 2016 and we've heard nothing of it yet. https://gizmodo.com/we-can-finally-stick-a-name-on-irobots-r...