Sony is desperately trying to own a live service game that will generate positive cash flow month after month for the next decade without investing hundreds of millions of dollars. Sony has some of the best selling single player games this gen but each game costs them a hundred million dollar or more to build and promote and more than half a decade to make. since their audience expects the most realistic looking games. Which is a huge risk to them when multiple games flops and when a game is successful it will generate most of the revenue in the first year only. That’s why they force every studio they own to build a live service game but the ironic thing is they lost more money doing that than they have generated from those projects.

Also it’s the same reason why Remedy Entertainment released a multiplayer game out of the blue. Since the development of Alan Wake 2 could have bankrupted them if the game failed. And also ironically this game probably cost them more then it will ever generate in income.

They really haven't. They're pumping out way more exclusives than the other studios and then releasing them on PC. Nintendo never will do that and Xbox doesn't really do exclusives anymore.