I don't even disagree? But to entertain this, I know MS didn't care, but in the 360 era, the 2011 PSN hack happened between April 17th and April 19th, the article everyone likes to bring up where MS rejected the idea of cross console play was in June 2011. In all honestly? Completely understandable to not want to get involved with Sony at that current point in time. After that happened, not even I put my credit card on PlayStation systems anymore because that was a huge unprecedented breach of security where they failed to notify people as they should have and broke a ton of trust with consumers. PSN was offline for 23 days. And they were also not interested yet in the XBO era either, the Pure Chess devs said so about MS and Sony when he was looking to crossplay between consoles. In the interview, the only one that was okay with cross console play was Nintendo, and he spoke highly that they were making swift changes behind the scenes to their policy regarding stuff like that in 2013. Ms and Sony didn't allow it, so Pure Chess only had crossplay between Wii U, 3DS, and iOS in the end.
Did you know DQX has crossplay? It's an MMO so of course it would. It also came out before 2013. Game was first released on the Wii, got ports to PC, iOS and Wii U in 2013, 3DS in 2014, then in 2015 for the PS4. You need a separate subscription to play the PlayStation version, while you just need 1 to play on any other device. Before everything left version 1 leaving the older systems behind, they could all communicate with each other and the Wii was the market leader.
Not to say Nintendo's a saint either. They've been stupid the past about online and not wanting it even though they made expansion slots on the Gamecube. They were also known for strong arming in No company is a saint.
Of course this also leaves out the Dreamcast. Sega was really ahead of the curve regarding online even before Sony. Some Dreamcast games had online events, crossplay, and even DLC for some titles.
I've been following a lot of crossplay stuff since these discussions spiked up in like 2018 because Sony wanted to "protect the children", I've made long form posts back on the older threads and why I think a lot of the opposing arguments against crossplay are stupid, and in some cases even steeped in fanboyism. Or why constantly bringing up the past with whataboutisms about the competition and what they did then while most here, including myself, were likely not even aware then or cared at all much then. I've done lots of research just to stamp out plenty of those whataboutisms. Since then things have been getting more and more open, closed systems are less closed now with crossplay becoming more and more normalized which is also aided by the fact that there are more online games of all different types then there ever was in the past. I still hold the stances I did then for the current restrictions, that only Sony does mind you, but is being seen as smart by some in here. WE. ALL. GET. IT. None of us are fucking stupid. The people arguing against the restrictions in this thread, like myself, see these restrictions as shortsighted and not good for the risks involved, especially for smaller developers and publishers that would want to implement cross progression. Cross progression is the future for a number of types of cross play titles, especially games as a service and MMOs, but the developer or publisher could be penalized by Sony if the play ratio and buy ratio of PlayStation users look off to them in the form of revenue share is absurd. It reads to me like a strong arming tactic. Even if we were to learn the clause just catches some edge cases, it can still present itself as a strong arming tactic.
This isn't even getting into one threadmark in this thread that doesn't get brought up enough either when it was brought up in the case. That Sony may be getting additional payments if V-bucks are spent on PlayStation.