Care should be provided. Most people in the U.S. have insurance and with Obamacare that also includes low income people. Worst case scenario the treatment cannot be fully paid and the person ends up on a long-term payment plan.
Letting them die when the resource is available would be unconscionable. Imagine if it was Einstein or someone of similar brilliance being permitted to die so the hospital could preserve it's bottom line? This the United States not Botswana. We can afford it.