They are a big corporation. The amount of potential money they can do with something is the only relevant reason for them to decide if they invest on something or not. They have the majority of the FPS players playing on their platform for that reason, this is why they invest all these millions to get marketing deals with the top shooter games, which is how they achieved having more FPS fans on their console (in addition of selling twice more consoles than MS, obviously).
Another big reason why Sony dominates F2P game communities like Apex Legends, Warzone and Fortnite is because MS used to paywall F2P games. This only changed a couple months ago.
I'd love to see all this happening, but MvC4 won't exist at least until 2025, SF6 will be multi and crossgen and Tekken x SF is pretty much dead.
But I think it's likely to see there SF6, Tekken 8 and next Netherreal game announced even if only with a logo. League of Legends and Dungeon Fighter games announced as PlayStation (who knows if timed) console exclusive. Arc System Works being acquired by Sony.