Liability laws incentives play a big part. Good faith effort and patient care increase the surface are for attack.

Potentially. However, depending on the nature of the interaction, abandonment is equally a concern for a provider. If I'm treating or begin care of a hypoglycemic patient (and I'm not saying that in this case, such a thing has happened), then legally, I can be found guilty of abandonment if I don't transfer care to a higher level provider or conclude the course of treatment or intervention planned. I can't just say "I can't do anything for you, you're on your own."