From my experience in large (and small) companies, trying to get something that is internally dead open sourced is usually not a huge fight against people saying no, just a laundry-list of things that need to be done before everyone will sign off on it.
One motivated person at a decently high enough level can get it pushed through, as long as whoever the person making the decision asks about it says, 'eh, ok.'
One motivated person at a decently high enough level can get it pushed through, as long as whoever the person making the decision asks about it says, 'eh, ok.'