I think people are deluding themselves. Microsoft did not spend $7.5 billion just so they could publish Bethesda games on PlayStation. I expect any game Sony did not make a timed exclusive arrangement with Bethesda for will not appear on PS. It's a major investment in their first party developing and publishing capabilities.
I am skeptical about MS excluding Playstation for a few reasons.
First, there is so much money being left on the table by skipping Playstation when they already have many studios working on exclusives. Second, they already get benefits by owning Zenimax such as launching $60-70 games on Gamepass, exclusive marketing, bundles and perhaps even timed exclusivity or content. Last, Zenimax will still be its own publisher it seems.
If MS had less studios and less big projects in development, keeping Zenimax content exclusive might feel more necessary. In general it would also encourage more people to use MS platforms. But I think MS will play it safe and get the Playstation money as well while also using the benefits of owning the IPs.
Rage 2 for X1X (4/5) - Rage for 360 (3/5) - Streets of Rage 4 for X1/PC (4/5) - Gears 5 for X1X (5/5) - Mortal Kombat 11 for X1X (5/5) - Doom 64 for N64 (emulator) (3/5) - Crackdown 3 for X1S/X1X (4/5) - Infinity Blade III - for iPad 4 (3/5) - Infinity Blade II - for iPad 4 (4/5) - Infinity Blade - for iPad 4 (4/5) - Wolfenstein: The Old Blood for X1 (3/5) - Assassin's Creed: Origins for X1 (3/5) - Uncharted: Lost Legacy for PS4 (4/5) - EA UFC 3 for X1 (4/5) - Doom for X1 (4/5) - Titanfall 2 for X1 (4/5) - Super Mario 3D World for Wii U (4/5) - South Park: The Stick of Truth for X1 BC (4/5) - Call of Duty: WWII for X1 (4/5) -Wolfenstein II for X1 - (4/5) - Dead or Alive: Dimensions for 3DS (4/5) - Marvel vs Capcom: Infinite for X1 (3/5) - Halo Wars 2 for X1/PC (4/5) - Halo Wars: DE for X1 (4/5) - Tekken 7 for X1 (4/5) - Injustice 2 for X1 (4/5) - Yakuza 5 for PS3 (3/5) - Battlefield 1 (Campaign) for X1 (3/5) - Assassin's Creed: Syndicate for X1 (4/5) - Call of Duty: Infinite Warfare for X1 (4/5) - Call of Duty: MW Remastered for X1 (4/5) - Donkey Kong Country Returns for 3DS (4/5) - Forza Horizon 3 for X1 (5/5)