The American health care system also costs double as a percent of GDP vs every other modern country's health care system so spending more money on it is not going to fix things. Arguing about who pays is easy.
People who self selected for free medical care didn't have much better health outcome than others who were not selected, except that they didn't go bankrupt.
So, the group that didn't get paid for didn't go to the ER, while the group that did get paid for went to the ER but didn't have better health outcomes than those that didn't. Surely that says something about the private, for profit institutions that run the ER business.