Idk, MS says it's profitable. I'm sure you know more though.

As if the Xbox profits are relevant to what I said. So you think Xbox makes 0 profit? Cool beans. MS still profits billions and billions. Yet they are apparently "desperate" for these PS4 MAUs that they won't even include with their actual users. Makes no logical sense.

Mmk well let's see here, you have someone that wants to play with their friend on MineCraft friend "A" has a PS4 and friend "B" has an Xbox, they can only play with eachother with crossplatform. Now with most Crossplatform games such as FF14 you create an account to play on their servers and across all platforms you can play with eachother. MS owns Minecraft so it is only logical that they want you to make a microsoft account to play on thier servers so if you are friend "A" you need to make an MS account to play with friend "B". The biggest difference though is that with FF14 its a third party game and MineCraft is now a First party game. So my question is How in the Hell do you actually believe that MS will not use all of these PS4 users that would have to make Xbox LIVE accounts to play MineCraft crossplatform with other consoles and not count them as MAU's for Xbox live.

And if you don't think MS are "Desperate" for more MAU's that's fine, but MS are trying to make sony look bad for not having "Crossplatfrom" but as it stands the Playstation has had more Crossplatform games and sony has been doing it for years compared to the Xbox. But go ahead and try and say that MS want Crossplatfrom play and Sony don't when it's more then just 2 games, one of which they own.

They can already through co-op remote play. If you have a laptop or pc you can remote play your niece's ps4 while she can join co-op on her end with another account. That is, if your niece trusts you enough with her psn login ;)

They'll be playing in split-screen though (yet useful to see where the other one is), the remote player has to be the one with the psn login (and owner of minecraft if it's a digital version), while the player on the actual ps4 has to be someone else. Plus you'll need to use a good old phone, skype or equivalent to be able to hear eachother. If you really want to, it's possible. There are (non official) solutions to stream your pc to the xbox one as well, so you could even remote play your niece's ps4 from your xbox one.

XBox One has game streaming as well, so the reverse is probably possible too, however I don't know how xbox one handles local co-op during game streaming. ps4 simply connects the rest of the controllers straight to the console and the rest of the players have to play on the console.

They don't use iOS or Android users, which I would guess vastly outnumber the amount of PS4 owners who play MC online.

Sony seems fine with cross platform play, unless it involves other consoles. 

I wonder about an unmentioned option: Sony gets access to non-PSN Minecraft players too.
That would be parity right? Not one platform owner (MS) getting advantage re: other platform players.
If MS doesn't think it's a big deal for them to gain access to Sony players, then it shouldn't be vice versa either.

Xbox does as well.

This goes for both your statements

Xbox users can play MC with any other platform except PS4 because Sony doesn't allow it.
Xbox users can play Rocket League with PC and Switch users but not PS4 because Sony won't allow it.

So MS is clearly open to play with other consoles. Sony is not.

Same goes if it went the other way around. Sony dont own Minecraft and they should feel really piliviged that MS still allows this game to be played on a PS4 which is a great practice. Sony should start respecting that like Nintendo does or if i was MS i would simply remove support completely and build the game around those who actually care. Its simple.

Majority of who? 

There's 60 million consoles out there. You'd be lucky if half of those knew what cross platform play even was.

There is literally no benefit for Sony as a business to do this. Sure it's a little it sucky that as consumers we don't have that option but I'm not losing any sleep over it. Nor would I lose any sleep if I had an X1 or a Switch.

Curious: Who on this website plays (not played, but currently plays) Minecraft?