That's actually exactly what J.P Merlet was researching about! But to be honest I am not sure if it ever got out of the university prototype phase. I know of systems in care-homes which are like movable cranes but they require big doors and even flooring like you would find in a hospital. Because handling cables is actually tricky and you have longer setup times than you would expect the only commercially successful cable robot that I am aware so far is the skycam other comments have mentioned.