Why is Firefox marketshare so low?
My experience with "normal" people; we the nerds told them to install chrome 10 years ago and now they are used to it.
Personally I use Firefox and have done since it came out as it's fast enough for me and I'm not a front-end dev so the dev tools suit my limited use.
So maybe it is more popular than we think. Very hard to know for sure.
iOS is a very important platform for Firefox, so apples anti-competitive behavior in this regard really undermines firefox's future.
I'm very sad that this issue has not come up in all of the debate about the app store.
It's still the default, and defaults matter.