> It's not the city's responsibility to make the sidewalks delivery robot friendly, it's 100% a failure on the part of the robot company

I don't expect them to make the sidewalks robot friendly, but I think they are responsible for keeping the sidewalks clear of obstructions - so if the robots are obstructing people in my view the city should remove them and fine the company.

Failing to do that would be a failure to maintain the sidewalk space, at least that's my thinking.