> Who is "having to do without" because they can't pay?

A very large segment of the poor and even middle class in the US who work jobs that don't provide insurance.

> In the US you can't be refused life-saving healthcare.

You're probably thinking of emergency room care for immediately life-threatening accidents. For those yes, the emergency room is required to stabilize you in the short term. You'll be billed for it of course, causing bankrupcy if you had any money.

But if you have advanced diabetes or cancer or any other life-ending conditions that aren't going to kill you right now, you will not get any treatment in the US if you can't pay for it so you can be left to die.

Some states are better than others with options for the poor, but many are atrocious.

A country where people die because they ration things like insulin, with a life expectancy a decade lower than Europe, an infant mortality rate higher than Cuba, and the largest amount of bankruptcies over medical debt...

You can absolutely be refused care until you die in the USA. Sure at the very end if you stumble to a hospital they'll put on a good show as they find out you're uninsured and you didn't take an ambulance because it was on average thousands of dollars, and you didn't go to a doctor because you knew you couldn't afford it...

People die here all the time from lack of care. Our systems suck and are way broken.

Emergency treatment, sure. Something that will kill you in a year, not so much.

Right, which means perfectly preventable problems just plague you until they become catastrophic enough that they require life-saving care. The bare minimum of course.

You can't be refused, but you can still be billed, and billed you will be.