Aspect of scale, actually. Well, that and, as ever, knowledge. Knowing who and how to approach a company for rights is, essentially, half the battle. The one who gets in first, with the best offer, wins. Just get a good offer. It isn't always upfront, either.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)