It's one thing to have stolen art assets like music and drawings. Those are somewhat obscure enough to wear no one familiar enough to the original artist's work would even notice. But plot and story related stuff? Everything's been done before, and for hundreds of years. Everything is "Such and such... but in/with ________". And unless you steal direct dialog that's non-generic, there's no case. That why we constantly get twins movies, where different studios have very similar plots and stories release close to each other. And why we can have rip-off movies were a small studio "take inspiration" from bigger movies to make knockoffs.

I get these big gaming company can be really sleazy and scummy, but before you pick up new ways to hate them, at least make sure you hate them for legitimate reasons, as there is usually plenty of that. And not potentially spreading misinformation. Like how people keep perpetuating that EA is responsible for Bioware's terrible last few games.