An interviewer once inquired about the ownership of the polio vaccine patent, to which Salk famously answered, “Well, the people, I would say. There is no patent. Could you patent the sun?”
On January 23rd, 1923 Banting, Best, and Collip were awarded the American patents for insulin. They sold the patent to the University of Toronto for $1 each. Banting notably said: “Insulin does not belong to me, it belongs to the world.” His desire was for everyone who needed access to it to have it.
The same way they were invented before.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6351694/
https://www.t1international.com/100years/