It's big enough for major projects like FreeBSD and Illumos - and for Linux itself (although due to no copyright assignment other than enforcing GPLv2 instead o

It's big enough for major projects like FreeBSD and Illumos - and for Linux itself (although due to no copyright assignment other than enforcing GPLv2 instead of "GPLv2 or newer" individual developers can and will dispute it). But ultimately there's no ruling to fall back on, as far as I know all cases ended up without actually getting a court ruling.