I wonder how this work with other games though, because people are now going to expect cross play in every game....
That's what I hope. Such stuff never really affects sales, the VoiceChat debate also doesn't hurt Switch-sales. So things that are beneficial for the customer (in this case the player) but not for the company are usually omitted. But Microsoft and Epic were taking shots at Sonys reputation, that's why I think Sony reconsidered. As crossplay is beneficial for gamers I hope the public debate now makes it impossible to deny it in the future, as it is simply expected. In that case the companies have no chance. That includes also MS, if they get in the situation like they were with the 360.