I switched over after the Manifest v3 debacle, and after a couple of months, I wonder if the implications of using a browser with a lower market share are overblown. I haven't encountered any site that misbehaves, and the only missing feature so far is within the Google Drive web app because it uses a Chrome-only extension [1]. Maybe the ongoing standardization of the web shows its effects here, and using a standard-…
Agreed. Even if Firefox makes up a small part of the market share, any website that serves millions of people will want to support it. Imagine if you have a website with 1,000,000 monthly visitors, and 2% of them use Firefox. Dropping support will mean 20,000 less monthly visitors. This gives us an idea of how much you should spend on support. If you make an average of $0.10 a month per user, you should be okay with…
It will always be 2% which will always be, at maximum, 2% more revenue. That's probably negligible if you have to support them and there's an opportunity cost to that money. You'd probably be better off spending that money on advertising than Firefox support, especially since Firefox users typically know when a page isn't working, it's probably them and they have a backup solution available.
I used Firefox for a long time but switched because I just got tired of switching all the time and I started regularly using a site that didn't work in Firefox (I don't remember now but I think it was my credit card).