A fact addition to the discussion.
The global insulin market is dominated by three firms: Novo Nordisk, Elie Lily and Sanofi, and it's also the case in the U.S. The same brands are sold at different prices in the U.S. and elsewhere.
On top of it, the leader Novo Nordisk is Danish, and the third one, Sanofi, is French.
https://www.ncbi.nlm.nih.gov/books/NBK278938/table/insulin-pharmacology.T.insulins_commerci/
https://academic.oup.com/jlb/article/7/1/lsaa061/5918811