If you're working for a megacorp, they might be self-funding their own insurance plan. Otherwise, it is just 'insanely expensive', we just have a system where

If you're working for a megacorp, they might be self-funding their own insurance plan. Otherwise, it is just 'insanely expensive', we just have a system where some portion of that insanity is 'hidden' by employers participating in the transaction (much like FICA tax 50/50 split). I did some work for a small insurance broker - about 15 employees. They provided health insurance for all employees. They invited me to a few company meetings, and the owners asked what people thought the cost of the insurance was, per month, per person. Lots of $100 and $150/month guesses. I said '$600'. Someone laughed, and the owner said "you're close - it's $586". The room went silent. It was going to be going up to, IIRC, something like $630/month, and he was preparing people for "hey, we're going to cover this, but we're probably not going to be able to do much else, or may have to cut back some minor reimbursement stuff."