It is extreme, but banning all insurance discounts would be a good first step. This might concern people initially (because the discounts are currently so high

It is extreme, but banning all insurance discounts would be a good first step. This might concern people initially (because the discounts are currently so high) but for practical reasons after the ban is in effect the costs will go back to more or less pre-ban levels, but now simplify billing (reducing costs) and benefit people without insurance (no more absurd inflated bills). Insurance discounts themselves are problematic, and also result in this silly "in-network" "out-of-network" system we have. In particular where you could go to an "in-network" hospital but get an "out-of-network" anesthesiologist or lab giving you care without warning.