Because the courts will have determined their business models for them.
As mercenary as it may sound, what these companies are trying to do is find a business model that is as friendly to themselves as it is hostile to their competitors.
And, sure, lack of copyrightability changes the parameters and will change behavior. What I think you have failed to support is that the particular change that it will induce will eliminate all such releases.
As mercenary as it may sound, what these companies are trying to do is find a business model that is as friendly to themselves as it is hostile to their competitors.
This is all part of the jockeying.