Wait, so let me get this straight.
Your reasoning for that is "it degrades property rights", but you're for publicly releasing Blizzards property for "the good of the many"?
You want the source to be available and you're trying to back into it with some sort of moralistic argument instead of just admitting that you want the work to be available but have no real basis for it outside of personal preference.
Because that's what happens when you try and make a rational argument for why you just want something. You get ridiculous arguments like "it's not ok in this case because property rights, but it's ok in this other case despite property rights".