Earlier quoted context omitted.
Why does the US consumer of said medications subsidize many other countries who have access to the same medications for a fraction of the US sticker price?
Lots of reasons. One of them is that other countries negotiate deals country wide and can get bulk discounts. The US does this with the VA and Medicare, and people using those services generally pay less than the rest of Americans. In the end, it is largely a policy choice, as having a single payer could get better negotiated deals on drugs. https://www.healthsystemtracker.org/brief/how-medicare-negot...
This is satire btw.