I don't see why the patient would pay for it. If the country / state wants him quarantined and treated by a robot then they are going to have to take that upon

I don't see why the patient would pay for it. If the country / state wants him quarantined and treated by a robot then they are going to have to take that upon themselves. Otherwise the person could just choose to freely infect as many people as they want because they can't pay for specialized treatment.