Is Cage a secret lover of some higher up or something?
No, Sony is a corporation when we get right down to it. There is a ton of moving parts at a major corporation, but at the end of the day, a corporation will almost always look out for their best interests (and won't always act for moral reasons). Even when companies do the morally right thing, it's usually down to doing it for good PR, or because they had so much backlash it was hurting their brand.
As of now, Sony might be feeling that there isn't enough backlash to justify cutting ties with QD, or taking the hit on losing Detroit. Basically they have currently accessed, that this is less risk. They could be banking on most people not caring about this news (or the news not spreading far). Or it could just be that, their relationship with QD (and the
Importance of Detroit for their company), means much more then a journalist / outlet.
All speculation tho.