alt Hacker NewsDidn't Sony gobble up a whole bunch of stuff from FReeBSD for the last few Playstation release without hardly contributing anything back at all ? IIRC the might have sent some patches to improve SMP or sponsored a conference.
Same with Microsoft and the Windows TCP stack lifted from BSD as well.
Compare with GPL licensed projects, like the Linux Kernel & its license making many projects possible, like the OpenWRT project for example.
Yeah I see a lot of corporate backing of Linux (GPL) and a bit of proprietarization of non GPL OSS. Meanwhile my employer also uses git and gcc, which are both GPL.
Companies that use software like it Free. Companies that develop software like it permissive. There are more users than developers, especially for large more important programs.