I'd like to believe this, but the study makes a bunch of really hasty assumptions. The authors derive the $1T number from $1.3T in total cost savings and $304B in incremental spend (incremental spend is due to insuring more people). The $1.3T in cost savings come from five big buckets: lower pharmaceutical prices, Medicare-level payments to providers, reduced administrative overhead, less fraudulent billing, and fewe…
I mean, admin costs at hospitals are ~25%, around half of that is directly linked to billing. Administrative costs in the US (because of course you have the same costs on the other side in the insurance side) are around 30% of cost in general, which is pretty insane.
The lack of regulation around pricing transparency and generally the lack of one-price-per-code (which the government uses to its "advantage" to get lower medicaid/medicare rates for sure) is what has caused this stupid arms race on both sides.