Do you mean “almost completely”?

“Partly funded by”?

Google contributed roughly 83% of Mozilla’s income from 2020-2023, and 89% of overall income since 2005.

https://windscribe.com/blog/windscribe-expose-mozilla/

I imagine the reason that Cloudflare is doing this now is that Google just got off with no punishment from their antitrust loss.

Anybody who competes with Google now has to worry that they’ll do to them what they did to Microsoft. And, with Trump’s DOJ, the government will probably just ignore it if Sundar Pichai shows up with a shiny bauble for Trump. So, I’d imagine that Microsoft, Cloudflare, Amazon (AWS, Twitch), and Meta, among others, might all decide to fund an alternative browser.

This is very encouraging:

Ladybird uses a new browser engine called LibWeb that is being created from scratch by the development team.

Browsers that rely on Chromium / Blink rely on Google. Firefox relies on Google for its funding, so any browser based on Gecko relies on Google. If they can make a browser engine that has rough feature parity with Chromium but doesn’'t rely on Google that’s very healthy for the web.