IBM bought RedHat, and recently decided to take ther code repos for RedHat Enterprise Linux semiprivate. They still have to offer the source code to people they give the compiled product to, but they don’t have to give it publically, even though it is open source. Their claim is that they didn’t like others profiting off their work by rebuilding the source an selling it. Of course RedHat seems to now be ignoring the rather large amount of open source code they didn’t write that they are selling, like the Linux kernel.