You said it. For a clearly marked place 'A' and a clearly marked place 'B' and a clean airspace in between and ignoring any economic factors, yes. This is called a "lab experiment' and has little impact on reality. Case in point: There have been people on the moon. Do we have regular service there or a permanent presence? No. The economics just do not work out at all, even 40 years later. And your minimal wage delivery man will be far, far cheaper for the foreseeable future. I am not being anti-tech here. I would love for this to actually pan out. But it will not.