That is a pretty flat statement. There is always other options. Just that some of them are very deadly. So who makes the call? The hospital administrator since we are are talking hospitals and choppers? The tower operator across town will call the hospital and see if it is okay? If he chooses to stop an pvt plane he then also has the authority to stop the hospitals plane.
In joint use airfields, how often do they refuse a declared emergency because it is a military or civilian plane calling?
I am the pilot, I have options, my passenger does not. Go there or they die. If I can get there, I will go there.
Having had a few problems over the years, some of which I put on the plane on purpose, which I deemed an emergency has never been a problem before I landed or after, nor was permission refused when I said I did not want to do what the controlling agency on the spot wanted me to do and said I was going to do this or that instead. Of course I always did safely execute my plan so there is that. If I crashed & died hitting a hospital, well, I would not care anyway.
I would like to meet the authority of an open helipad who would refuse a landing of any chopper with an emergency on board that is described as serious. Would they ask if it happened in flight or were they picked up and then determine permission using that information? Is the operator a doctor to be able to say wither it is serious or not? How many doctors would allow themselves to be put on the grave yard rotation to man the pad radio in … say Boston?
If two choppers were exactly going to have the same ETA and they and both needed the exact same help that the pilots would not exchange info, (98 year old vs 15 year old) and then do what is needed. (Most of those pilots can get down near almost any hospital without an pad. “I’m setting down in the front lawn, send a gurney out here.” ) I want to meet them.
In some third world places I can see that kind of abuse of power but in very few places IMO.
The odds of dual need at the same time is so small, best be worried about a meteor which is more likely.
Time to land deplane and clear is really short when it needs to be, ask any military pilot.
I am sure some set of circumstances can be dreamed up that there could be actually a problem but that holds for everything there is.
Now that this has been presented, I have already thought about it and within the wildest possibilities of circumstance I have a plan for what I would do with a lot of different possible combinations and how & why I would be willing or not to carry them out. That is what alive and old or smart pilots do. Most of us really hate stuff we have not already though of, it is just not good piloting to be caught out that way.
If the hospitals aircraft forces the delay of a critical patient for a person with a simple broken leg they picked up at an accident and the serious person they were told of died within the time they messed around with the broken leg & preventing the help that could have been given in that time frame that would have saved the life as determined by independent doctors & autopsies, well, someone relatives are going be a might put out.
I am sure some letter of the law pilot some where would do it. I have never met one, especially in the life saving business.