You see, hiring him to do unlimited clay for 3d coat after he got very much ahead in development of unlimited clay for Blender would seem ok if 3d coat developers make him scrap it for blender.
It in fact makes 3d coat developers look unethical- because if he wasnt hired, the open source community would have had this feature for free.
Even if he doesnt release it- that wouldnt stop them to implement it in Blender. It will just make both him and 3d coat look bad to 3d enthusiasts who have been following the progress of unlimited clay.
If you look at what pixologic did with sculptris after they bought it, you will see that its important for a company to keep their positive look- so they kept the last version of sculptris free to the community- that way they attracted sculptris users and developers to their camp.
