We don't know if the studio itself pitched the idea to Sony or if Sony thought they should make them do it. Now without a doubt either way of those two things, A) Sony should have realized no this is a bad idea or B) told that executive he's an idiot. Lol
I'm not sure who thought it would be a good game to begin with. I can't even imagine a fun way to play a live service GoW. That's so anti everything GoW is.