There is a huge additional set of decisions that are not made under duress, but
are made in an information vacuum. Two recent examples from my own health history:
My optometrist wants me to try a new kind of contact lens. She cannot (or will not) tell me what they will cost. She can't tell me what they would cost me personally because she just doesn't know - all they can do is send a bill to my insurance company and find out how much they pass on to me. Which is essentially asking me to write a blank check. Nor can she tell me the sticker price on these contacts so that I can at least know the upper bound, because she simply does not have (easy?) access to that information - the billing department does. Probably I'll stick with the same brand I've been using for years, because at least there I can safely assume they'll cost about the same now as they did last year.
Similar story for my doctor offering me a flu shot while I was getting a checkup. She couldn't tell me the price, she didn't know the price, she couldn't get access to the price, etc. I usually go to the pharmacy, where they bill $30 and insurance covers it all. So I figured, "How bad can it be? And it'll save me some time," and let her give me the flu shot. Big mistake - the doctor's office billed $300, insurance (quite reasonably, TBH) only agreed to cover a portion of it, and I got stuck with a $200 bill.
There's two problems there. One is the lack of price transparency. The other, though, is the prevailing attitude - in both cases, the doctor's opinion, which I think is most everyone else's opinion, too, was, "Who cares what it costs? If the insurance covers it, it's basically free to you." Which just ain't true, especially for routine care stuff like this. The insurance company isn't getting their funds from some magical fountain of money. From a "see the forest not the trees" perspective, they will have to pass every cent of these costs (and more) on to me.
Both of these problems are solvable.