Most decent people would “self choose” treatment or not.
If my grandchildren or children or sons in law were seriously ill as I was I and there was a shortage of available treatment, I would without reservation say “treat them first” out of love. I think all of us would do such.
sorry! I think that is a bit delusional thinking that others will “self-choose”. I am not sure where you live, but I have seen a lot of selfishness and self-cenetered people. When push comes to shove, they will not step aside for anyone.