I understand the bodies simply are not retrievable by human means in many instances. Generally, those that are accessible already have been removed.
So says the mountaineers who don't want to take the time to bring them down......./s
With that being said, I've always wondered why the outfitters didn't bring along one of these...

Just strap the dead body onto the sled then push it down the mountain where it would hopefully end up at an atmosphere where it could be picked up..........Or not