Read this article and do a search on the word “Pull”
Sony just loves to deny content to gamers who are not on the Sony platform, but on the other hand, they were very scared that Minecraft would be pulled off PSN. So yes, fight fire with fire.
But as long as Phil Spencer is in charge, Minecraft will be available on PSN. He strongly believes in: If everybody plays, we all win. From an Xbox perspective I would have pulled it off. From a shareholder perspective: I would not have pulled it off PSN.