Sony's doing a lot of stupid shit in recent years, the stupidest of which being denying all forms of crossplay whenever they are approached by developers with it. They refused Rocket League crossplay with Xbox (I believe PS4/PC is a go though), denied Minecraft Crossplay, and in a sort of similar move, denied full mod support for Fallout 4 and Skyrim Remastered, allowing only mods that just recycle/repurpose existing content within the game already and not allowing any additional content to be added.
Why would Sony shoot themselves in the foot like this? I have no idea why they'd think their customers want this. I assure you, they don't want this. They want more people to play with, more content to enjoy from other versions of the game. They want a Mario Minecraft skin on their PS4 version. They want a Halo theme on there. They want to be able to play with their friends on other platforms. But Sony just says "nope" and is completely stubborn and won't budge.
Why is Sony so bad?