Interesting, from that links i see some replies like this:

> Also, the FreeBSD license was more relaxed and commercial products (like NetAPP) could include and extend FreeBSD without disclosing their modifications.

and then (same comment):

> Our frustration with lack of support for FreeBSD moved us to choose Linux and Windows

I think these two things are strongly correlated: the bsd license allow companies to avoid contributing back improvements, and this prevents the main FreeBSD codebase from getting better.

I think that in the long run this is detrimental to projects.