How was it more performant? As I remember it, Chrome was loading websites not noticeably faster than Firefox, as website loading speed depended and still depends mainly on your internet connection and hardware anyway.
As I remember it, Chrome exploded because it was pushed onto users at every possible opportunity while Firefox depended (and still depends) on users actively looking for it.
Used Google or Google products? Get ads for Chrome. Wanted to download Google Earth? You had to activly uncheck a box such that Chrome wasn’t going to be installed as well. Meanwhile no ads and not the same amount of exposure for Firefox.
That way they achieved a critical mass and snowballing did the rest. There were so many users using it that it was considered a good choice just because it was used by many people.
Regarding the performance aspect, if there even was a noticeable difference, it was worse than Firefox. Where else did the “Chrome eating RAM” memes come from?
Restore Privacy – Alternatives to Google Products – The Big List (2024)