Isn't it a bit like the tree in the forest falling? If you never sell a robot, but spend millions trying, while also causing investors to lose millions collectively, is it making the world a better place? I'd have to say no I'm afraid.
The market for robots has been around for 50 years, the ability to provide such technology is what's lacking, and after millions in losses and 14 years of trying, switching to "collision proof wheelchairs" doesn't seem like a strategy that's going to help.