That's very inaccurate. Firefox held a ~30% market share way back in ancient times (~2009), which decreased to around ~10% through to ~2018.
The substantial drop from ~10% to it's current position only happened in the last few years.
Animation of the browser market share over time, if that helps: https://www.youtube.com/watch?v=es9DNe0l0Qo
Here’s a Mozilla blog post from 2009 celebrating hitting 25%:
https://blog.mozilla.org/metrics/2009/11/09/firefox-hits-25-...
That was the highest point.
Also those numbers seem to be highly inflated
https://en.wikipedia.org/wiki/Usage_share_of_web_browsers
That's very inaccurate. Firefox held a ~30% market share way back in ancient times (~2009), which decreased to around ~10% through to ~2018.
The substantial drop from ~10% to it's current position only happened in the last few years.
Animation of the browser market share over time, if that helps: https://www.youtube.com/watch?v=es9DNe0l0Qo