People will cry about "Get GaaS out of my games" to the ends of the earth, but this is another example of why it's imperative that Sony gets a few going soon.
They are doing very well, but that doesn't always translate to profits. They need reliable consistent software revenue streams for when their single player studios are in between big projects.
It'll take Santa Monica, Naughty Dog, Sucker Punch, etc, 4-6 years to make a new game. It's going to take a GaaS team a year and a half to create a new expansion, and less than half that to create a new season. Even less to create a bunch of useless cosmetics everyone will buy.