Some people really dislike the permissive licence used by FreeBSD. They see large companies, such as Sony, using FreeBSD and they wonder whether any useful code

Some people really dislike the permissive licence used by FreeBSD. They see large companies, such as Sony, using FreeBSD and they wonder whether any useful code, hardware, or cash are sent to FreeBSD as a result. It can feel to some people as "unfair", perhaps even exploitative. It's interesting to see the culture clash between different licensing philosophies.