In addition, the price of insulin is sky high, despite being non-patented, because of exploitation of a different set of arcane government policies by pharma companies that roll out slight modifications of insulin that they claim are more effective, and subsequently get everyone to prescribe those despite only marginal benefits at best... while the previous generations quickly fall off the market, as soon as their patents expire.
https://www.cbsnews.com/news/how-drug-companies-keep-insulin...