Why would they be looking to buy new studios, especially ones they personally havent worked with?
That's my point. Hence the: "I struggle to come up with possible acquisitions well suited to help them expand the types of games they make."
With that said, they have collaborated with most of those devs.
Bluepoint Games (Shadow of the Colossus Remake)
Clap Hanz (Everybody’s Golf)
Insomniac Games (Spider-Man)
Kojima Productions (Death Stranding)
Supermassive Games (Until Dawn)
Firesprite (The Persistence)
Hello Games (No Man’s Sky)
Level-5 (Ni no Kuni)
Media.Vision (Wild Arms)
Q-Games (PixelJunk Series)
Quantic Dream (Detroit: Become Human)
Ready at Dawn Studios (The Order: 1886)
Sanzaru Games (Sly Cooper: Thieves in Time)
Sumo Digital (LittleBigPlanet 3)
Tarsier Studios (Tearaway Unfolded)