What are the odds that I skip a dozen pages and come in right on a response.
Again, how does any of that disqualify it from the discussion at hand? You're making points that have literally nothing to do with what I'm talking about. You're having an entirely different conversation.
I brought up Rocket League because the fact that Sony is blocking it from having cross-play with Switch and Xbox, despite MS not being involved, despite the lack of centralized account system, despite Sony allowing cross-play with PC, indicates that the one and only issue here is Sony is against cross-play between consoles. I never said anything to the contrary of your post, and it wouldn't matter anyway because how little you like the implementation has exactly nothing to do with anything.
If you search your own name in the search bar you can see who's quoted you. It's easier than skipping pages and hoping someone replied.
Also, I didn't quote you at first, you quoted me. So if your point was unrelated to mine, then why did you quote me? My point was that Rocket League is not a good model for cross play. Saying 'but we've seen it done with Rocket League, feels a little arbitrary when it isn't cross play options aren't fully featured.
In either case, I can't see Sony ever agreeing to open the flood gates universally. Even with PC cross play, which they pioneered, this required communication with the developer on a game-by-game basis. Certain games, like Minecraft, offer much larger incentive for Sony to allow cross play. Whereas on Rocket League, the PC+PS4 community represents the vast majority of the player base. Sony probably see little benefit.
But the point is that it's not a universal rule that we are likely to see implemented. I imagine Sony will look at Rocket League and Minecraft differently, and just because they refuse to support cross play on one, doesn't mean they will on another, etc.
I think Minecrafts reason is likely to be because of Microsoft wanting to push their account services on the Playstation Platform. That's never going to happen. In Rocket League's case, it's likely a) that the cross play implementation isn't handled well and b) there's little incentive to push crossplay to other consoles, for a game that isn't (proportionally) very popular on other hardware.
In either case, something like adding cross play to the platform where you hold the vast majority of users is a huge decision. While there was an incentive for Nintendo, and Microsoft to simply sign off on their feature (generally speaking, it's all win for them, since their userbases are low) I imagine it's one that Sony will want to have an indepth conversation about.
And if it is something Sony decide to support. I imagine it's something that they'll have a set of rules for. Just like they have rules for publishing games in general, checklists that developers have to pass before publishing games, and extensively so for things like VR. If it's breaking new ground they'll want to make sure it's not harming their existing consumer base.
In the end, the point is that just because Sony are 'blocking Rocket League', doesn't mean that they don't want cross platform play universally, additionally. there was a huge incentive for Microsoft, and Nintendo to push for it. I don't see why anyone expects Sony to move so quickly. While cross platform play may be a hot topic on likes of neogaf, to the lay consumer it's just a very minor value add. To Sony, it reduces the value of their platform, which has a huge userbase - so personally, I'll excuse them while they mull it over. We haven't seen cross play implemented very well, across any game so far so it's perfectly rational to sit on the fence until they see a developer do a good job.