The big money in U.S. health care causes many problems, because people want that money. And it's a service business, which means dealing with annoying patients.
It's anecdotal, but everybody has heard medical mistake stories because that's what people notice and talk about. I've heard surprisingly bad stories from well-regarded hospitals. Then there are the lower level hospitals. Consolidation means most hospitals are run with the incentives and mechanics of a large company. The labor force is expensive (no more nuns), and the medical requirements are much higher than in the past. Just look at the ICU situation when Covid-19 broke out: rich in quality, meager in number. We've spent decades extracting value from efficiencies in supply chains in the economy as a whole, and specifically in hospital bed space. (There are even "outpatient" overnight beds, typically in less desirable rooms without windows, due to billing quirks.) So when the sht hits the fan, there's not flexibility. You can't just pack patients into a gym, until you do.
Doctors in primary care and practice groups like GI spend half their time answering questions on medical information systems after each procedure, so don't have time to chat with patients. And those groups are consolidating as well. Anywhere there's a chance to make more money (non-profit in close the meaningless), management does it.
"Rich people hospitals" is mentioned above, and probably means executive health and the very few top-level hospitals that avoid uninsured or otherwise non-paying patients. It's probably more common *outside* the U.S. The places people travel to, like Cleveland Clinic, Mayo, etc., actually take Medicare (old-age government insurance), for people who can afford travel and accommodations. Traditionally, the local "rich people hospital" that avoids the poor is not that great at the difficult cases, which go to hospitals that do treat uninsured people and where the best training occurs. (But there is pressure to match high-level care, both attracting staff and patients. Even decades ago, the prestigious university hospital in the city I was living in lost its entire heart transplant department to a suburban non-university hospital.) "Rich people hospitals" can also be the better experience of the well-off or well-insured patients at research hospitals. Maternity wards are a big area of competition that everyone in the US has heard about from friends and family.
The research teaching hospitals also make deals with private (nominally non-profit) chains to expand their reach. Just look at eye clinics: the main hospital will have a waiting room full of moderate income and poor people with diabetes, etc. The suburban clinics run by the same hospital will have a nicer crowd, depending on the area. And parking! This used to be called the carriage trade. A way to make money. And... large non-university hospitals, which can also be teaching hospitals, are delving into research to get the grant dollars.
With so much money sloshing around, many corruptions appear, as well as some efficiencies. But it's a service industry, so there are lots of people with unpleasant jobs, and patients with unpleasant experiences. What surprises me are the actual medical mistakes in good hospitals, by physicians, as well as due to the high level staff being invisible for 95% of the time. The rooms and lobbies are nice though, some committee wanted that!