Partially they cant .The creator will give you the copyright of their product PIECE BY PIECE, but that would include some terms they want publishers to follow ( it depends) since they are the owner. And back to the piece by piece thing, no company would be that dumb to give their thing as a whole. They will gradually give the publishers codes and contents of the game . Everything will be updated stage by stage. I dont know why ppl are still asking this kind of subject. That oasis wanna milk some more money is a possible reason but it still remains the fact that they cant just publish contents on their own if tencent give them nothing new. And why tencent dont give the whole thing? It's bc that's how the market works