Comment by Schiendelman

I am familiar, I'm a big fan of Dean Kamen's work. So far, we haven't seen a single wheeled stair climbing vacuum cleaner, even though the original iBOT is 23 years old.

That solves the horizontal mobility problem. And then you have cabinets - and wheels don't solve the vertical mobility problem. So then you need a scissor lift on those wheels, or a hydraulic lift.

The robotics nerds always end up back at bipedal because it's vastly simpler once you're already solving arms.