http://gameological.com/2013/05/for-our-consideration-backward-compatibility/
A really interesting article about how expensive backwards compatibility really is and why the next generation of consoles is ditching it, and why they're still dicks for doing so. Especially since, as I've noted, I've been playing a whole bunch of "living in the past" PS2 games via the PSN like Sly Cooper, the God of War series and Jak & Daxter without crumbling into dust due to technological regression.