Two things imo - the push for hip-hop acts to play in arenas in stadiums changed the focus of the sound. A song like Taking Care of Business by Shawty Pimp doesn't work in that sphere. A random good example of what I'm talking about, ever seen Mark Henry enter in the WWE? His theme song is a bass heavy 3-6 Mafia song that sounds canny and tinny in arenas due to insufficient setup. To make big ole bass sound good in a big space costs $$$$$$
Second - the way most people listen to music changed to shytty in-ear headphones and portable device speakers.
The bass music era came alongside the home/car audio revolution, the synthesiser craze, and the transformation of the nightclub scene.
Having a song that knocked as hard as or harder than the others meant something, as most people experienced music in that way.
I think there's an argument the trap hi-hat sound is a direct response to finding a way to engage people in bass beats through speakers that didn't play bass well