@doctor_mg: It is understandable why Sony don't want to be part of this because having software from their competitors in their system isn't by any means good for them. It makes sense why Microsoft want this, but also why Sony don't want to be part of this.
@doctor_mg: Yes my friend, but earlier news about this depicted Sony as the bad guys for not accepting this cross-play without giving enough info, now it is perfectly understandable; somewhat disappointing but understandable.
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