Both leaders of both teams died...one out of stupidity one because he just had to keep going and one because he stayed with a climber determined to reach the top even though it was after the cutoff time of 2 pm. The latter leader was in a quandry; go back to save his own life or accompany the stupid climber because he felt responsible as the leader. He died for his decision.
The issue of cheap, inexperienced climbing teams came up. Some pay $35,000 to climb and some pay $6,000. Some in the $6,000 camp make stupid decisions for which other teams may end up being responsible. Sounds like that's what happened in this case.
If a sick or dying climber can walk it might be possible to get him down. But dragging a climber down seems impossible.