alt Hacker NewsSure but they’ve always been mastered with the same setup, so the bar has not changed. And anything flavoured will not work universally for all types of music or other kinds of audio (like voice calls are really hard to understand with bassy speakers).
Mastering is done with the target in mind. There's tons of great videos by Masahiro Sakurai (Creator of Smash Bros.), one of which covers how they use typical household TVs to tune the audio/video for the game because relying on top-end audio/video equipment will result in worse results for the player.