You have $100,000.
You can keep one PVS patient alive for five years. Or you can feed 100 hungry children for five years.
What are you going to do?
The problem isn't between money vs. life. It is between life vs. life. The reality is that there are not nearly sufficient resources to provide the highest level of medical care to everyone who can benefit from it, or who can be sustained in life by it. Who pays? How do you allocate limited resources? These are real-world questions.
So just who would be in charge of making those "real-world" decisions? This is the argument Hitler used.