Microsoft launches open source foundation (Linux-Watch)

No, let me repeat. When some company takes BSD code from some project and creates its own, closed-source fork, there is a non-zero probability that this company will hire developers from the project and return code that is not a selling point for them. That happens a lot - from PostgreSQL to FreeBSD to Xorg. That's symbiosis.

When GPL-ed project takes BSD code from some project and creates its own, GPL-ed fork, there is zero probability of the original project getting anything in return. This just doesn't happen - for variety of reasons, one of which is that the GPL license prohibits incorporating changes back to the BSD-licensed code. That's not a symbiosis.

Stop complaining that people make use of the freedom that you have yourself stipulated in your license. This is incredibly stupid, even if someone like Theo de Raadt seems to think differently. I say this because obviously, this is especially true for people who have chosen the BSD license to release code: it permits using it in a GPL project. Whatever happens in the real world is part of the process that leads to chosing the license, it's not the other way around.