You may not be interested in license differences, but many downstream vendors are. Several have a "No GPL-3 code past the front door" policy, and others would even like to not have GPL-2 code near their products. FreeBSD's active progress towards being entirely GPL free is very appealing to these people.

FreeBSD has made significant progress here, and 10.0 is on-track to be GPL-free for all tier-1 platforms, including:

* Clang/LLVM rather than GCC

* New BSD licensed toolchain

* New text processing tools (sort, grep, etc)

* bsdtar - since picked up and used by several other operating systems