No. It's well known that Bungie loathes Microsoft. It's not an activision decision (activision are big time Xbox whores, cod etc) it was Bungie. There is a reason why every 'game with devs night' was on ps4.
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Maybe they are with Destiny but he industry as a whole is doing exclusive stuff. Be it maps, dlc, weapons or missions. It is becoming more and more rare for a game to be released for both systems and have the same content.