As others have pointed out, if they weren't distributing source and passing on the license, this is a blatant copyright violation, and what they were (still are

As others have pointed out, if they weren't distributing source and passing on the license, this is a blatant copyright violation, and what they were (still are?) doing is illegal. If you're at all interested in doing anything about it, copyleft.org has a bunch of useful resources.