Uh, it's been done a few times as a neat tech demo, but the reality of surgery is that you really need a surgeon there, in the room, who is capable of doing the surgery as an open procedure if the robotic attempt fails, or if they hit a bleeding source.

And you need someone who's qualified to place the ports in the body in the first place.

In practically all cases, if someone needs a highly specialized surgeon, it's logistically much simpler to take the patient to them.