If there is capacity then there are several avenues to satisfy individual autonomy. Palliative and hospice modalities offer increasing latitude to insert alternative treatments.
Unfortunately once capacity is well established as diminished ethics committee actions and state licensing standards drive many of the ways care is implemented across the care team. The care providers as well as family members risk significant consequences if normal standards of care are withdrawn.
Personally, I recall distracting a client on the phone with shoe color options while a phone trace was established for law enforcement to physically intervene on an elderly patient who wanted to wonder out of their home into a heavy snow storm. It seemed to be the case during the call that the caller was looking to bring about a bit of control and certainty to their timeline and suffering. There isn't a week that goes by that I don't reflect on the sound of their voice. Confused, disorganized, disoriented, despiration when they realized the uniformed officers in their living room where there to stop them from leaving the house.