Where by "successful" is meant: the ones who get attention. In other words this is a tautological claim. Everyone else has already pointed this out, but as a no

Where by "successful" is meant: the ones who get attention. In other words this is a tautological claim. Everyone else has already pointed this out, but as a non-self-promoting developer I have to add my bit. Often the best programmers have zero self-promotion instinct, and this has nothing to do with not wanting to share. "Share" in this article means something like "publish", and that's both a different skill and a different desire.