1. Buy studios
I think they need racing games and online games so more in that direction.
Codemaster seem to be a good fit. They have F1 licence as well.
Psyonix games has made good multiplayer games, most recently Rocket League.
Remedy would be a good buy, Housemarque too, Supermassive Games too...etc.
2. Create/expand new studios
New San Diego and Guerrilla 2 is a good start.
Maybe create more teams within Japan Studio as it's a bit weak on Japanese games.
3. Collaborate Co-make games
Like with From Software Bloodborne, keep working with them, Bloodborne 2 or whatever.
4. Exclusive deals or money funding
Do something with Platinum like Nintendo with Bayonetta or MS with scalebound.
5.Contract studios to remake/re-imagine classics
Bluepoint with SotC, Demon Souls next please.
Medievil is good. More would be great.
6.Nurture small indie size studios into AAA size studios
Bend studio's 1st AAA game wasn't great, but sold well, keep trying.
Pixelopus's next game, if it does well, make a bigger project next time.