Scarcity is a fact of every country's health system and you'll quickly find stories with similar fact patterns with e.g. the NHS. There's not a lot to recommend the US system as implemented today, but the problem isn't "insurance-based health care"; lots of countries have insurance-based health care.
It's largely a side effect of a couple things... first the ACA (ObamaCare) limited the percentage of profit that insurance and medical providers can make... so they instead just grow the pie larger by inflating everything. Second is that they are allowed to have effectively vertical monopoly investments controlling multiple layers of healthcare as a whole from insurance, providers, pharma and pharmacies.
Trust busting and multiple supply lines really need to be established in order to have a chance at restoring normalcy. Which is all but impossible as Pharma alone is the single biggest spender of advertising alone, let alone policy influence over politicians.
How exactly do they make more money by not paying? They're required to spend 80% of their funds on provider expenses. The only obvious way to sustain the narrative that insurers are distorting the system for profit is the preceding comment's hypo that they'd be over-paying (and then driving rates up as their expenses increased). You propose the opposite fact pattern here.
(Net cost of health insurance, all expenses, is around 6.5% of total US spending, as against 51.5% of direct provider costs for doctors, nurses, and procedures, not counting prescriptions.)
The problem is that the insurance is provided by private companies whose incentive is to earn as much money as possible, at cost of the people in need of medical care. In my country, I never heard of anyone going bancrupt over a hospital bill. It just isn't a thing.
Here's a fun story: my sister was living with an exchange student from the US. Some day the student was complaining about intense intestinal pain she's had for the past few days. My sister told her to go the hospital. The student asked her if she was crazy. My sister then had to explain her that hospitals are free and won't bancrupt her...
In fact many of the largest insurers are nonprofits, and insurance itself is a small faction of our total expenditure. People believe a lot of weird things about US health care economics.
There's another aspect: In my country, hospitals and (public) health insurance are both operated by the state and work together. If I break my arm, I go to the hospital, show my e-card and that's it. All the financials are directly handled between hospital and the (public) insurance provider. I don't have to worry about cost of treatment because I know it will be fully covered.
Right. The mainstream progressive proposal for comprehensive health care reform in the US is single payer, so-named because it does not nationalize the providers. But the providers are where all the cost is!