Earlier quoted context omitted.
This same problem exists in the hospital setting on anything with wheels. They solve it there with "cord pushers". Basically cattle guards for stuff on the floor. Not every problem needs a complex solution. I think the brilliance of this project is in its simplicity, particularly in the robot design.
Take a look at these pictures: https://duckduckgo.com/?q=cluttered+old+persons+home&atb=v31... I was thinking that people who live in an environment like this are most in need of a robot to help them.
The issue I see is that is by far the most challenging corner case. It's not the largest market, but it's the most difficult to capture.
Good business sense would dictate that you should try to capture the largest market, that is simpler to capture first, then go after these more difficult corner cases.