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Is It Worth Killing Mozilla to Shave Off Less Than 1% From Google’s Market Share? - Open Web Advocacy
(open-web-advocacy.org)
A community for discussion about Mozilla Firefox.
There are other open source browsers/engines.
Aside from that, Imo, it's not cheap to do what Mozilla is doing, but 1/2 billion annually is probably more than enough.
I believe thar be grifting in them waters.