In most other contexts, rich people being able to spend money for some good or service would simply induce more supply ultimately making the product cheaper and better for the masses as well. The rich get to be "early adopters" buying a product when it's expensive and not very good; the poor as "late adopters" get to buy a product that is cheaper and works better once the bugs have been worked out. So...why exactly are resources and talent considered "finite" when it comes to health care and shouldn't we maybe look at FIXING that rather than take it for granted?

Consider, say, food distribution: McDonalds has traditionally made far more money as a private business catering to the tastes of the poor and middle-class than any fancy restaurant ever made catering to the rich. Do fancy restaurants like Per Se "suck up all the resources" needed to cook and serve food? Does the existence of fancy restaurants hurt McDonald's by making it harder to find burger-flippers? And does McDonalds in turn "suck up all the resources" thereby making it harder for people in some other context to find and acquire food? If not, what makes healthcare so different?

Not comparable.

If there were a limited number of licensed cooks like there are doctors, it would be far different.