> Insurance companies don’t actually make very much profit.

Insurance companies usually (maybe it's always, not certain) are regulated to a percentage cap spent on categories. What is the result? They are incentivized to push prices ever higher as much and as fast as possible because a % of higher price is more profit for them.

> Insurance companies are an easy target though, since no one wants to go after the doctors and hospitals for charging too much.

Doctors and hospitals actually provide a valuable service, they provide health care. They deserve to be paid.

Insurance companies provide no value whatsoever, they are just a middleman siphoning off profits off the work of doctors (and nurses and everyone else doing the actual work).

Also, doctors don't actually charge that much. When I get billed $980 for a 15 minute doctor visit (as I just was last month), it is most certainly not because the doctor is earning ~$4000/hr. That doctor isn't paid more than your average senior software engineer (in Silicon Valley anyway), all the rest of the money is lost to middlemen who didn't contribute anything.