Neither Xbox boss Phil Spencer nor Rocket League developer Psyonix is particularly convinced by Sony's reasons for not allowing cross-platform play.

Earlier this week, it was revealed that while Minecraft and Rocket League were getting cross-platform play across several platforms, PlayStation 4 wasn't one of them.

At the time, Sony's Jim Ryan said "a commercial discussion between ourselves and other stakeholders" and "exposing what in many cases are children to external influences we have no ability to manage" were the reasons his company wouldn't allow PlayStation 4 owners to join in.

Now, speaking with Giant Bomb (via Games Industry), Spencer voiced his displease with Ryan's statements, but also said the door was still open.

"The fact that somebody would make an assertion that somehow we're not keeping Minecraft players safe I found – not only from a Microsoft perspective, but from a game industry perspective – I don't know why that has to become the dialogue," he said.

"That doesn't seem healthy for anyone. We can always do better with everything we do, but I feel great about our relationship with Minecraft.

"I just really found the whole discussion around safety in our game, and that somehow we wouldn't take that as a top priority... Frankly, through the parental controls on Xbox Live and everything we've done, we've shown that's very important to us as a platform," he continued.

"We would never put Minecraft in a place where we felt like we weren't keeping our players safe."

Speaking with Venturebeat, Psyonix publishing boss Jeremy Dunham called Sony's stance frustrating, and said it made no sense.

"From our perspective, if PlayStation already allows cross-network with PC, which is the least regulated of any of the partners, then in theory, having Xbox and Switch in there should be fine," said Dunham.

"They’re a lot more regulated. From our perspective that concern is already handled. That’s taken care of."

One example he gave: in Rocket League, PC players can’t text or voice chat with those on PlayStation 4.

"We think we’ve got it all covered," said Dunham.

"Some of the concerns are – that was the main one. The other one is security. We’ve worked on all the platforms and had our engineers working on the servers.

"Xbox has the highest security of any of the platforms. If we can pass that, we can pass any of the other security protocols. We run our own servers. We run our own matchmaking. None of the platforms are aware of what’s going on in the other’s ecosystem. We control all that."

Dunham said true cross-network play is very important because you can have faster matchmaking and you get better quality opponents.

"I don’t see why they should say no to Minecraft," said Dunham.

"Our position is, it’s better for gaming as a whole. This is what I was telling my brother. He’s in town and he was asking me the same question.

"I said, ‘Look at it this way. You have a Samsung Galaxy and I have an iPhone. If you told me that because I have an iPhone, I can’t call you on your Galaxy, that doesn’t make sense to me. I chose this platform because I like the shape of it, the features it has," he added.

"From our vantage point it’s a competitive disadvantage not to support multiple networks, because most platforms are now doing that. We’ve taken every precaution necessary to reach the minimums for cross-network support on each individual platform. From our perspective, we’ve done everything we need to do. It’s just getting a permission slip."