Current top 5 played games on the Steam Deck are: Slay the Spire 2, The Binding of Isaac, Dave the Diver, Stardew Valley, and Baldur's Gate 3. BG3 is the only one you can consider AAA, but Larian is hardly an EA or Blizzard.

The big AAA studios recycle the same formulas and push graphical quality (mostly downstream of Unreal Engine improvements) because they are risk averse. Similar to big comic-book-hero films. It's not what consumers want and it's increasingly starting to show. AAA is struggling badly while indie has been on an absolute tear the past few years.