There's a strange relationship where the bill provided to you is not actually expected to be paid as-such when given to the insurance company -- they will generally challenge the bill, and through a court, it will be negotiated to something more sane -- and this bill will finally be paid out.
So a doctor can charge you 10k, but the insurance company itself will only end up paying 2k to cover it (and you pay your deductible).
So the charged price is entirely divorced from reality.
You get fucked when you don't have insurance, because you can't participate in this process