This isn't a Sony thread but since you asked for it....
I think it's worth mentioning that Sony has quite a few studios that are MIA. We don't know what Quantic Dream is doing, we don't know what Sucker Punch is doing, we don't know what Sony Japan (their largest studio rumoured to be making several large RPGs) is doing, we don't know what Sony Santa Monica is doing, we don't know what Polyphony Digital is doing, we don't know what Sony Bend is doing, etc. Right now, we have Media Molecule's Dreams (this will be huge), Horizon, Uncharted, The Last Guardian, Wild and tons of random 3rd party exclusives from Japan, big and small.
Microsoft has 343 with Halo, The Coalition with Gears, Lionhead with Fable, Turn 10/Playground with Forza, Rare with Sea of Thieves, Remedy with Quantum Break, Armature with Recore, Platinum with Scalebound and ReAgent with Crackdown. The only thing we don't know is what else Rare is working on.
The point that I am making is that this is not like the PS3 last gen. Sony had tons of first parties to help them climb back up. This gen Microsoft doesn't. And it seems that Phil Spencer has realised that.