The "traditional" AAA pipeline is "make big games with loooots of assets and mechanics, maximize playtime, must be an Open World and/or GaaS". Both due to institutional pressures (lowest common denominator, investor expectations for everyone to copy the R* formula, GaaS are money printing machines) and technical reasons (open worlds are easy to do sloppily, you can just deliver the game half finished and have it work (e.g. Cyberpunk), GaaS/open worlds are a somewhat natural consequence of extremely massive development teams that simply could not work together on a more narrowly focused genre).

That's not to say there aren't good expensive games being payrolled by massive studios like Sony or Microsoft. But AAA is a specific subset of those, and blandness comes with the territory. However if I was a betting man I'd say we're nearing the end of this cycle with the high profile market failures of the last few years and the AAA industry will have to reinvent itself at least somewhat. Investors won't want to be left holding the bag for the next Concord.