Yeah, console hardware already run on thin margins and it feels like one of the big manufacturers are already on their way out. I don't think extra regulation benefits anyone. Not the devs, not the consumers.
Meanwhile, Apple and Google sure aren't going to call it quits just because they take 10, 20% less.
You're seriously arguing that Sony and Microsoft need or deserve special treatment? That's patently insane. The Government shouldn't be in the business of assessing the minutia of competing business models. Whatever you think is right for Apple, it's good enough for absolutely everyone.