Why is there no Open Source SLES ?

Fabian pointed to an interesting article from a Red Hat engineer about CentOS and Red Hat's position. An interesting question popped up that I asked myself before: "Why is there no SLES alternative distribution ?". Given all the benefits a free Enterprise Linux brings to Red Hat, Novell must be eager to want to tap into this resource, right ?

One comment suggested that Novell did not release SRPMs and therefor it was impossible to create a free SLES clone. Reality seems a bit different: Novell does release SRPMs.

There are a few reasons why there is no Open Source SLES alternative.