GPL (Score 1)

The revenue model of the Free Software Foundation was basically give away software and charge for media and support (ok, with the Internet nobody really needs media). There is no requirement in GPL to donate any specific number of lines of code, the only requirement is if you distribute its software you have to give away the source. If Red Hat wants to be able to close the door to cloners than they should switch to the BSD kernel and be done with it. Everything Red Hat does to make it difficult for other entities to use their code goes against the spirit if not the letter of the GPL. Instead of licensing their distribution Red Hat shoulld give away the software then charge for support. That is how it worked before RHEL and is the way it should work today. Red Hat should be happy that other people are using their contributed code rather than feeling violated.