Not every web browser gets money from Google - Brave, Vivaldi, Pale Moon, Konqueror, Epiphany, Ladybird, Servo, to name a few.
Brave is into crypto scams and advertising scams, so I guess you're right there. Their revenue is also tiny.
The rest aren't what I'd call "real" browsers, most don't have the same level of functionality and compatibility as Chrome, Firefox, Safari, Edge... Servo for example is literally just the rendering engine Firefox gave up on.
Konqueror and Epiphany are Webkit based, so presumably benefit from Apple's funding of Webkit.
Ladybird and Servo aren't real browsers yet, and have so far been funded by grants which doesn't seem to be long-term stable.
https://github.com/brave/brave-browser/wiki/Deviations-from-...