I've been wondering for a while now why health insurance companies exist at all. They introduce a massive bureaucracy and massive costs and provide very little value. They evolved from a reasonable idea into a monster that just drains our system and do not provide enough value to justify their existence in my opinion.
I've studied this a little. There are many stories depending on what you choose to believe. I believe the current state of affairs is a consequence of tax policy; health insurance benefits are untaxed income, a tax policy often attributed to powerful labor unions in the early 20th century. ACA attempted to tax "Cadillac" plans but the sunrise on that was kicked years down the road and when it was about to take effect…
I come from a large family (8 kids). When by mom was still alive, I asked her if making medical claims was a pain. Nope, she said: tell your information to the doctor, and sometimes she'd have to pay part of it.
Now, even with "gold plated insurance", many of my families doctors don't handle insurance; we pay them directly, and we have to deal with the insurance companies ourselves. My wife spends countless hours dealing with what I assume is willful incompetence. For example, filing four identical (other than date) forms for a series of physical therapy sessions, and having the insurance company approve two and reject two because the codes were wrong. Or the it was unreadable. Followup calls get a different person every time, and when they review it they say: oh, I don't know why it was rejected, that is fine. I'll personally make sure it gets fixed. And then it doesn't get fixed. Having to call five for six times for one bill is common.