why would they want to keep it to themselves? maybe if it contains trade secrets or defamation or copyright infringement? but probably most code doesn't

i don't want other people to use my open source code unless it's more useful to them than the alternatives, and i think they're a better judge of that than i am; trying to convince them to use it would imply i think i'm a better judge of it than they are

i'm always happy to talk with them about it, but i'm not coming from an advocacy perspective, and i think people who are are bad