content: I think the GNU licenses states you can't do what these companies are doing which is effectively theft of services.   The companies can change the code and sell it as their own but need to pay for commercial transfer.  This is how many Linux based companies operate.   What these guys are complaining about is effectively infringement. This article is garbage at explaining this though and is more focused on the groups involved.   It did not once go over the specifics of the issue.