I agree with freelancer77 regarding cost of development (might even be higher than those figures) and evident issue with IP, although my feeling is that competitors who could put something on the market are few and they probably have things figured out.
It reminds me of mutable instruments which publishes all firmware code of their modules, that also allows competitors to pretty much bundle the same logic in their own hardware or software shops to bake the same logic.
I wish after many years since last maintenance (and no perspective for future development) such software was released for the sake of allowing the die-hard users with software skills to fiddle with the hardware.
That being said, if the community demand is big enough, it is definitely possible to fund third party development from scratch or reverse engineered parts of the OS.