Actually, the OpenBSD people grumble about all the companies incorporating their code (mostly OpenSSH) and not contributing anything back, too. There's a differ

Actually, the OpenBSD people grumble about all the companies incorporating their code (mostly OpenSSH) and not contributing anything back, too. There's a difference between what is legally allowed and what is (considered) ethical. It's just that the GNU people, being (more or less) on the same team and fond of open-source retoric, are more vulnerable to pressure.