And how are these contributors going to contribute to their proprietary solutions that we now provide for them?
How do we support something that is simply provided to us as a binary and has no upstream bug tracking or support (outside of a support contract)?
How are these users going to react when all the software they know and love (that we provide) breaks due to no fault of our own?
Are we going to hold back bug or security fix because it breaks a proprietary program but fixes it for everything else?