I don't have a source, some looking will find it, but NASA used to have to be in the public domain. Now they partner, and the partner gets the patents. I know the Apollo soyez mating hardware was public domain, and apas docking is still.
I also seem to remember that research paid for by the USA, used to have to stay public.
I don't have a source to quote, just memory.
There really is no good reason for not being open source.
It opens some weird ideas to the game. If you are unvaccinated, yet previously had the illness and recovered, do you need a vaccine. What if you've been vaccinated and still spread it. What if you can't have the vaccines because if of health conditions. Anger does not fix the problem. We need a compromise, not a rule.