For some reason, the BSDs never really developed as a rival to commercial server operating systems. Solaris, Irix, Windows NT, etc all seemed to exist pretty we

For some reason, the BSDs never really developed as a rival to commercial server operating systems. Solaris, Irix, Windows NT, etc all seemed to exist pretty well even though BSDs were freely available. Then Linux came and ate everyone’s lunch. Maybe it was the GPL’s requirements to contribute back changes that resulted in Linux rapidly developing a lot of capabilities?