I'm sure there is a good reason for it but I wonder why it is we can't play across platform? I wouldn't think it is because of the impact of controller scheme or other general qualities. Is it chat vs voip? Inability to merge login management systems? Billing systems, something else?
I suppose if I want to play both on PC and PS4 because my friends are all over I have to buy the game twice but do I have to pay for two different subs?