If Microsoft continues to future proof and pushes the game as service aspect of things while Sony doesn't allow crossplay or backwards compatibility going into next generation, they can and will fail.
2014 Sony would have never let Microsoft control that message but arrogant Sony is apparently back. As games as service become more important the no crossplay PR is increasingly bad for them and I am honestly not sure they realize how damaging it is to have a large chunk of the casual audience resent you going into next generation because of this Fortnite stuff. If there is no backwards compatibility even I as a long time fan will be voting with my wallet.
Don't be fuckin stupid Sony
There tonnes of kids now playing games for the first time and their first impression of Sony is that they won't let them play with their friends on other consoles.