But we don't, there are better alternatives based on both Chrome and Firefox.
Still, I agree that we need more browser platforms. I have high hopes for https://ladybird.org/
Discussion
Better is highly subjective.
That said, Chrome's integrations into other Google services make it mostly better than anything else.
I've been using Brave for many years, and it's great, but I dislike some of its integrations, such as the shitcoin wallet.
I have used probably every browser out there, but not this one before. I'll check it out.
Another good option on the Mozilla side is Floorp.