I've been told that such things as Ambulance rides are so expensive is because of all the freebies they have to give to people who can't pay. Those who pay have to pay enough to cover those who don't.
If Ambulances had to go into bidding wars before they picked you up, like Uber and Lyft, then things would be different.
Another change which is desperately needed is Tort Reform. Desperately!
Much as I oppose most of the systems in place in Great Britain, they do have a system which reduces lawsuits by a great deal.
We need a system where if you sue me, and you lose, you pay your own legal expenses and all my costs as well. That would eliminate thousands of frivolous lawsuits. Right now, a company will pay a nominal amount rather than go through the litigation. If the plaintiff had to decide whether to sue and if they lost they could be faced with monumental legal fees.
That does not preclude a plaintiff's attorney from taking a case on a contingency basis. If they're confident in the case, they'll be happy to take the case. If it is iffy, and the payout might only be $50,000-$100,000 they're going to pass. Which is a good thing.