It doesn't matter, contractual obligations will prevent them from doing so regardless of technical limits. The illusion of exclusivity- buying into one console's infrastructure over the other, to pick what system you play on- is worth more to the corporations behind the platforms than encouraging you to buy both, which would obviously benefit bungie and activision. it's a political problem, the kind of thing that feels ridiculous on PC, where the manufacturer of your particular assembly of components couldn't possibly matter less to developers and publishers.MS/Sony may a not go for it but it is saved Bungie side and we have Bungie.net accounts. Gotta be a way to tie them together on their end regardless of manufacturer support.