Why did BF2042 turn out the way it did?

EA think the best way to deliver games is to monetize everything.

Recent massive successes like Helldivers, Battlebit, Tarkov, Lethal Company, The Finals, and others have proved that players can see straight through that now, and would prefer to spend their money on a game that is fun to play, isn't necessarily a live service game, is well balanced, is produced by devs that listen to their community, and basically a game that focuses on the gameplay.

Pretty much everything 2042 isn't.  2042 tried to be too many things at once.  Too much variety and not enough detail.  Trying to squeeze various game modes and ways to play into the same maps was always going to result in terrible map design.  Concentrating too much on poorly implemented game formats that are not traditionally Battlefield, like Hazard Zone, reflected badly on other elements of the game as devs seemed to struggle to deliver even the basics.  Classes, destruction, vehicle/infantry balance, server browser, map design, netcode - all either missing or poorly implemented.  Most of the promises of the trailers have never materialised or been phased out or become insignificant compared to the issues.

I have no confidence that EA has learned from the mistakes of 2042 and will just continue their usual model of game production with the next Battlefield game, and ignore the feedback and requests from the loyal playerbase.  Recent developer departures and studio closures have only made that feeling much worse.  Every game since BF4 has gradually gotten worse, and while big improvements were made to BF1, BFV and 2042 after their release, it was too late to make the game a success, leaving the devs supporting the game scrabbling to make ill-thought changes trying to appease those that spent their money on it.