If only some (former?) Mozilla workers setup a workers coop that relies solely on donations to produce a decent web browser... Something like what The Document Foundation did for Libreoffice sounds like a good economic model.

I'd be more than happy to donate 10€/month (though i'm really not rich) to keep business incentives outside of the web in at least one well-supported browser. I'm sure there's other likeminded folks. But donating money to help COs and managers make in a month what i make in several years*? Never.

EDIT: Just to be clear i'm explicitly not talking about Brave which is an advertisement company investing in so-called cryptocurrencies, both of which is a redflag for a web browser (although they have some cool tech to showcase).