I guess Sony isn't confident it can dominate the market solo anymore and decided it's better to play ball, otherwise people may just leave her for other consoles, namely the Switch.

Not for a moment I believe it is doing it for the goodness of her heart. She saw the writing in the wall and is maneuvering accordingly.

Still, it's nice for the player to be able to pick whatever they console they prefer and still play with their friends so this is good news.