As always the issue with privatized social services is that the goal is to make money, not to provide a service so the incentives are fundamentally misaligned. For-profit care providers make money when the fail to provide care. When they fail to cover procedures. When they can substitute lower-quality or less effective goods and services. When they can sell you catastrophic cover with deductibles and co-pays too high…
That's pretty much it, but I would add that since medicine in the American sphere of influence is a cornered market the goal is always to deny care, so the patients are more desperate and pay higher prices. Endgame is a billionaire paying his whole billion-dollar fortune for a loaf of bread because he's starving. First you have to corner the market, then deny food, then eventually yes, eventually he will in fact pay…
Good will and brand alone isn't sufficient to build a medical system on.