I get that there are different levels of quality regardless of the type of code. I was more interested in the security effects of hiding code after the open sou

I get that there are different levels of quality regardless of the type of code. I was more interested in the security effects of hiding code after the open source community has had a chance to deal with vulnerabilities. None of the examples you gave were specific to code which has transitioned between open to closed. What I've gotten from your answer so far is that it isn't an effect which is general, and it'll depend on the project in question. Am I on the mark?