What does this have to do with robots? What does a local government failure to provide cycling infrastructure have to do with private businesses co-opting public shared resources?
There is cycling infrastructure, the cyclists just choose to use pedestrian sidewalks. If cyclists infringing on pedestrian pathways isn't enforced, why should robots infringing on pedestrian pathways be enforced?
Post you're replying to: "motorized vehicles"
You: "cyclists"
I don't get it. Can you explain why humans on bicycles are relevant to a discussion of motorized robots? Are you talking specifically about e-bike users scooting along on the sidewalk at 40mph or something?
Because cyclists violating pedestrian walkways isn't enforced, so robots violating pedestrian walkways not being enforced is at least the law being enforced consistently.