The entire salary for the resident can be earned back in 3-4 days. You still have 360 days left to pay back admin overhead, facility overhead, supplies, etc. That is earned back in the next several weeks. After that, the next ~300 days of the year are profit.
In states with balance billing, the doctor can set any price and bill you for the remaining figure with a balance bill. In NY and NJ these can be thousands or tens of thousands. If you dont pay, it goes to collection and the provider still gets 10 to 15 cents on the dollar. So no...the $75k annual salary of a resident is not a barrier to training more doctors according to any math i'm seeing. What am I missing?
What seems more likely is that supply is artificially constrained to increase scarcity and prices.