I believe this would open the playing field for many people to create browsers
That's why it's not going to happen. Even if you managed to reset the cycle it will just happen again but this time even faster. EEE/standards corruption is just too powerful, I haven't read a single successful strategy to stop that long term. So even a parallel subset of the web doesn't seem immune to that. Like the other day I was reading about KaiOS and you can guess who's already investing in that platform.
Google (and the subsequent overlords) are cancer and there's no cure.