None of your examples are relevant. Simple greed or inconvenience is not part of the discussion here. Your profile says you were in the USAF. If you were in a fighter, back in the pre-Clinton era when they still carried weapons, and saw an aircraft on its way to hit the WTC and you had a clear shot...would you have fired? One shot, possibly, and all that death and suffering could have been avoided...except for an unfortunate few. Horrible situation to be in and you should not have to be in it...but there you are. In many ways, those doctors may have been in the same situation.
Your example is irrelevent. These patients weren’t killed to save the lives of a greater number of people. If you want a relevent hypothetical example from 9/11, here’s one a little closer to this situation. Should the firemen going into the burning buildings have brought with them lethal injections, for any victims they couldn’t save?
Do you believe there would have been no loss of life, other than the passengers, if a pilot shot down a commercial airliner over New York City? You are seriously detached from reality and have no concept of military operations.
Your mind seems to be amazingly immune from any truth that deviates from your opinions.