There is no evidence that this what's happening, and the famous RAND health insurance study showed that health outcomes have almost no relationship with the healthcare system, so you'll need to look elsewhere for explanations for the U.S.'s relatively poor standing in life expectancy rankings.
Right now it's a race to the bottom - who can get away with the worst service. So they're motivated to be able to prevent bad press etc.
The whole system is broken. Just take a look at the 41 countries with higher life expectancy.