Netscape may be. Mozilla is the child of some influential hacking community that spun off, back in the early 2000s that then found a lifeline in Google ad money. Since that phase passed, they've still siphoning off those laurels for the next two decades.
I worked for Red Hat in 1999 and am pretty aware of the landscape of the early Internet and software, but always up for some corrections - my billionaires comment was a bit tongue in cheek, I'm not sure the early Mozillans are actually billionaires.