Any of the thousands of linux contributors has the every right to sue you if you are redistributing his code without his written permission (remember, GPL is invalid in law regards in SVK). I don't think it's very sane to trust the copyright holders' good mood to not sue you when you are infringing his copyrights - and yes, you are infringing it if you don't have his signed agreement, that's the law and no matter you write and call a license you cannot out-rule that.

In addition, corporations are owning part of that copyright too - if you look at software patents war, it clearly shows what tools are to be used against the competition.

I'm not sure if I understand your last sentence.