Sony used to have a much more diverse lineup of first party titles. In the PS3 days a crowd started to gather around these first party titles that were AAA story focused single player games and as time went on Sony was more than content to let others do the heavy lifting in other styles of games as they went further and further into that type of game.
Now we've reached the third party acquisition phase and their first party lineup while filled with all these blockbuster AAA games lacks that variety that it had long ago.
I remember the days Sony was adventurous enough to let a JRPG like Wild Arms happen under their watch. Present day Sony isn't going for that. They even let those Resistance and Killzone style games go. They aren't making a Socom. Most of their big titles are from studios that aspire to make these movie like games. Even the tacked on multiplayer modes have been lessened like on the Uncharted 4 Remaster. Last of Us 2 came out without one.
The obsessive focus on making those blockbuster AAA single player story based games needs to be cut back. If these other companies that make the variety of titles that Sony enjoyed to fill out their lineup could be gobbled up then Sony is going to need to fill in those gaps themselves. If Call of Duty is going away and PS gamers like to play it then they need to make their own game to fill that void.